Questions
Case Study: James McBride, general manager of the new Ritz-Carlton in Washington, D.C., faced the largest...

Case Study:

James McBride, general manager of the new Ritz-Carlton in Washington, D.C., faced the largest
challenge of his successful career. A proven veteran of the luxury hotel chain’s march across Asia, cBride’s most recent assignment was as the general manager of the 248-room Ritz-Carlton in Kuala Lumpur. For the first time, The Ritz-Carlton was opening a hotel that was part of a multi-use facility. Owned by Millennium Partners and located in the historic Foggy Bottom district of Washington, D.C., the $225 million “hospitality complex” covered two-anda-
half acres and included 162 luxury condominiums, a 100,000 square-foot Sports Club/LA, a Splash Spa, three restaurants, 40,000 square feet of street-level restaurants and retail shops featuring the latest designs from Italy and other countries, as well as the 300-room hotel. While The Ritz-Carlton had already signed contracts to manage five other hotels for Millennium Partners, the upscale property developers had also inked deals with the Ritz’s foremost competitor—the Four Seasons.
Brian Collins, manager of hotels for Millennium Partners, had his own ideas about what constituted luxury service and how the hotel’s general manager should approach the new-hotel opening. Under pressure from Collins, McBride was reexamining the “Seven Day Countdown,” a hallmark of The Ritz-Carlton’s well-defined hotel-opening process. Any changes McBride made could not only affect his company’s future relationship with Millennium Partners but also the carefully guarded Ritz- Carlton brand.

Filling hotel rooms was crucial, and The Ritz-Carlton’s general managers aggressively pursued their
two main customer groups: (1) independent travelers, and (2) meeting event planners.

Because they attracted many individual guests at once, meeting event planners were seen as “the
vital few” customers, representing a small number of organizations that held many large meetings in various locations around the world. These “vital few” accounted for 40% of annual sales income.
"Our event business pays the mortgage. The individual traveler helps us with our
profitability. The nature of our business is that a guest room and space is the most perishable
product we have. An apple left unsold today can be sold tomorrow, but a room night lost
today is lost forever."

One of the components of the SQIs involved guest-recognition procedures. As an owner, Collins
wanted to see that improved for the new Washington, D.C. hotel:
I pushed James [McBride] to hire more people than The Ritz-Carlton staffing plan would
lead them to hire in Guest Recognition. I think it’s the single most important thing we can do.
If a guest came in, got what they wanted, and were recognized, all of a sudden that creates a
sticky relationship. It’s all about organizing your thoughts and creating processes to recognize
the person coming in to the hotel.
So after a certain number of visits to one of our Ritz hotels, guests will get a monogrammed
pillowcase. It will be in their room so that when they check in, they’ll go to their room and say,
“Oh, my pillow’s here. Isn’t that great!” And no one expects it, so the first time, it’s like
“Wow!” We’re doing something different from The Ritz-Carlton standard—we’re clearly
exceeding the standard. But they don’t force every owner to abide by that higher standard, so sometimes there is friction about raising the standard outside of the Ritz program. I want to rethink it, rethink it all from start to finish. And it just drives them crazy.

Human Resources at The Ritz-Carlton
The way The Ritz-Carlton viewed its employees was a distinguishing hallmark of the
organization. According to Leonardo Inghilleri, the corporate vice president of human resources:
We respect our employees. The issue of respect is a philosophical issue that is driven by
our leadership. You have to have a passion for people. If you have an accounting approach to
human resources, then you’re bound to fail. If you look at an employee and say, “He’s a fulltime
equivalent, he’s an FTE; he is eight hours of labor,” I think that’s immoral. An employee
is a human being who doesn’t only fulfill a function but should also have a purpose. So a
successful business is one that is capable of enlisting an employee not only for his muscles and
his labor, but also for his brain, his heart, and his soul.
In hotels that were up and running for at least a year, The Ritz-Carlton’s annual turnover rate was
only 20%, compared with the hotel industry average of 100%, while new hotels experienced turnover rates between 20% and 25% during the first 60 days. Inghilleri believed that it was his company’s deep respect for its employees that led to their satisfaction with and commitment to the organization.
The Ritz-Carlton was so intent on treating their employees well that a “Day 21” event was held as a process check three weeks after any new hire’s start date. During that session, the company assessed the degree to which it had lived up to the promises it made to its employees during orientation and initial training.
One of those promises included opportunities for career advancement, which were abundant at
The Ritz-Carlton. Corporatewide, 25% of the organization’s managerial workforce began their
careers at The Ritz-Carlton as hourly employees, such as dishwasher, housekeeper, and restaurant server, or as hourly supervisors.

Through the extensive formal and informal training offered by The Ritz-Carlton,
employees were prepared to fulfill their current obligations and to accept positions of greater
responsibility and accountability in the future. Employees with advancement ambitions were
encouraged to cross-train and learn about as many different aspects of the organization as possible.
Our employees are taught from the very beginning that there is nothing more exciting than fixing a mistake or defect. They want to see the defects, they want to find out what they are, because once that’s known, they can be corrected. We’ve never had a problem with people hiding mistakes, because it’s just not the culture of the company.

Staffing the New Hotel
The property owners had the right to approve the individuals nominated by The Ritz-Carlton for
three executive positions: general manager, director of marketing, and controller. Once McBride was selected as the general manager, he was instrumental in choosing the additional members of the hotel’s executive committee, almost all of whom had experience at other Ritz-Carlton properties. These leaders were in place about two and a half months prior to the scheduled hotel opening. The executive committee then selected their functional managers, who were, in turn, primarily responsible for hiring line-staff members. For positions that required technical expertise or high-level service delivery, individuals with significant prior experience were hired. For more entry–level positions, novices to the hospitality industry were acceptable.

The Seven Day Countdown was a result of the evolution and refinement of the hotel-opening
process, which became more solidified in the late 1980s to early 1990s when the hotel chain was
opening many new properties. The first two days were devoted entirely to orienting employees to The Ritz-Carlton culture and values, while the remaining five days involved more specific skills training and trial runs of service delivery. According to Collins, ensuring that everything was perfect on opening day would be a challenge:
There’s all this construction activity going on around here, finishing floors, testing the firealarm
system. And they have 400 people they have to convert to Ritz-Carlton employees in the
next seven days. They have to be trained and dipped into the culture of The Ritz-Carlton so
that on day one when Ms. Jones checks in, she’s getting a true Ritz experience. Seven days.
I’ve told James I just don’t know if that’s enough time.

Day One: Staff Orientation
On the first day of the countdown, new employees joined other members of their divisions
outside the hotel for what can only be described as a pep rally. As they slowly wound their way downstairs toward the ballrooms where their first training sessions would occur, the employees heard the sound of enthusiastic applause. It was coming from the hotel’s managers, who lined both sides of the curved marble staircase. Many times over, each employee was sincerely welcomed as a new member of The Ritz-Carlton family.

Once everyone was present, McBride introduced the hotel’s leadership team, followed by The Ritz-Carlton trainers, who had come from 23 different countries around the world for the countdown. Addressing all the employees of the new hotel, Schulze explained his philosophy of being a high-quality service organization:
You are not servants. We are not servants. Our profession is service. We are Ladies and
Gentlemen, just as the guests are, who we respect as Ladies and Gentlemen. We are Ladies
and Gentlemen and should be respected as such.

Day Two: Departmental Vision Sessions
On the second day of the Seven Day Countdown, employees in each functional area met for an
introduction to their new departments. Group exercises were used to help the employees learn more about one another, their likes and dislikes, and how they could function together as an effective unit.
For the next five days, the hotel’s leadership team, trainers, and managers met each morning at
6:00 a.m. to review the day’s training activities and to resolve any difficulties that had arisen.

The last three days of the Seven Day Countdown was when departmental technical training
occurred. Employees learned the details involved in performing their jobs to the standards set by
The Ritz-Carlton, and everyone was expected to master their department’s key production processes. Employees arrived in two shifts, dressed in their full uniforms, and every employee practiced his or her job as if they were serving real customers.

Recognizing that their standards of service were extremely high and that their goal of opening as
a top-notch hotel right from the start was a tall order, The Ritz-Carlton tried to protect their
employees from feeling overwhelmed by controlling the occupancy rate. Inghilleri explained:
The first month of operations, we may open the hotel with 50% occupancy. Then we’ll
increase occupancy monthly, so it takes us somewhere between three and four months to reach
80%. But we hire, in the very beginning, as if we’re already operating at 80% occupancy.
This allows us to reduce the number of tables a waiter has to serve, or the number of rooms
a housekeeper has to clean. It is more important that we set the standards immediately. They
have to do their jobs perfectly, even if it takes them longer; productivity will increase as they
get more and more comfortable. Flawless execution is the goal, and then speed will come.
On the day between the end of the Seven Day Countdown and the grand opening, employees showed up in casual attire for The Ritz-Carlton two-hour pep rally, marking the transition between practice runs and real service delivery. The next day, on October 11, 2000, the Washington, D.C., Ritz-Carlton Hotel opened for business.

Dilemma
McBride sat in his new office in Washington, reflecting on the concerns that Collins had
expressed, with his usual blunt style and candor, about the Seven Day Countdown. Collins
questioned whether the seven-day time frame limited the hotel’s ability to open at a higher
occupancy rate and to reach 80% occupancy in a shorter amount of time.
It was difficult to train new hires to meet the high expectations of The Ritz-Carlton service
standards in only seven days, but that was how The Ritz-Carlton worked. Maybe the training should be longer, but what would that mean for The Ritz-Carlton? McBride would be responsible for opening the second Millennium Partners-owned Ritz-Carlton hotel, in Georgetown, at the end of 2001. Should he try changing the Seven Day Countdown process, which was a worldwide best practice for the company?

Questions:

In what may be a first for the hospitability industry, Brian Collins, hotel owner, has asked James McBride, Ritz-Carlton general manager, to lengthen the amount of time spent training hotel employees before hotel opening. For this assignment, you are taking the role of James McBride.

1) What is the context of the decision? What is dilemma faced by the Ritz-Carlton?

2) Analysis of the situation:

  • Monetary factors: what would be the monetary consequences of opening directly at 80% occupancy as requested by rather than ramping up from 50% to 80% over a four-month period of time?
  • Non-monetary factors: what are the key non-monetary factors/considerations that are going to drive your decision?

In: Operations Management

Cash Flow Data for Interceptors, Inc. 2005 2006 2007 2008   Cash $ 40 $ 50 $...

Cash Flow Data for Interceptors, Inc.
2005 2006 2007 2008
  Cash $ 40 $ 50 $ 60 $ 70
  Cash from operations $ 132 $ 130 $ 127 $ 122
  Net capital spending $ 150 $ 145 $ 150 $ 155
  Cash from financing $ 28 $ 25 $ 33


What must cash flow from financing have been in 2008 for Interceptors, Inc.?

$33

$43

$10

$40

In: Finance

You set up your own business in merchandising sector. You lease a space of 6,000 square...

You set up your own business in merchandising sector. You lease a space of 6,000 square feet to open a luxury watch shop.

The following is minimum information regarding the business:

- Specific sub-sector: Merchandising sector.

-   Business model: buying and selling luxury watches.

-   Investment by owner: $1,000,000

- You hire a shop manager, two accounting staffs who also keep the merchandise, one security officer, and 8 full-time sales assistants.

-   Business costs/expenses should have at least the following: cost of merchandise sold, rent expense, salary, utilities expense, advertising expense, interest expense, and miscellaneous expenses.

  1. 1/1/2019 : Opened the business, invested $1,000,000 cash in the business.
  2. 1/1/2019; bought a building for the business purpose for 100,000 cash. The building has a useful economic life of 10 years.
  3. 1/1/2019; bought store and office fixture for $20000 cash.

  1. 1/1/2019: purchased 100 luxury watches (Inventory) for $200,000 with $100,000 cash payment, the remaining amount payable on 2/1/2020. ( each watch costs $2,000)
  2. 3/1/2019: purchased 50 luxury watches (Inventory) for $250,000. Each watch costs $5,000.
  3. 4/1/2019: purchased 40 luxury watches (Inventory) for $240,000. Each cost $6,000.

  1. 6/1/2019: Sold 130 watched for $1,300,000. Of which $300,000 cash was received at the time of sale. The remaining amount to be received on 5/2/2020.

  1. 7/1/2019: paid $1,200 in advance for 12 months’ property insurance
  2. 8/1/2019: borrowed $500,000 from a local Chase bank. Inrerest rate is 12%/year. Interest is paid every 6 months- the first payment date is 2/1/2020. Principal is paid on 8/1/2020.
  3. 9/1/2019: to expand business, you rent a showroom in the next building. Paid $24,000 cash in advance for 12 month’s rent.

  1. 12/31/2019: Paid 2019 utilities expense, advertising expense, and miscellaneous expense for $5000, $15,000, and $4,000, respectively.

  1. Salary is paid on the last day of each month. Each month’s salary expense is $20,000.

Notes:

  1. On 12/31/2019: Physical inventory showed that there were 60 luxury watches on hand at the end of the period. The company used periodic inventory system, and used FIFO costing method.
  2. Your business used straight-line depreciation method for all fixed assets.
  3. Ignore tax.
  4. Prepare financial statements on 12/31/2019.

In: Accounting

You are trying to find a relationship between the productivity of your sales staff and some...

You are trying to find a relationship between the productivity of your sales staff and some other factors such as the number of training hours, age, and the current annual salary. You have collected the data of 37 employees. The Output is the percent of actual sales given the sales leads. You want to study the impact of other variables on this Output. For example, does age matter? And if it does, are the younger employees better performers than the older employees?                                            
                                          
                                          
                                          
                                          
Output Data                              
Employee       Output (O)       Training hours(T)       Age (A)       Income (I)
1           58.8       24       60       22.1
2           58.7       25       59       24.6
3           58.2       25       59       25.1
4           57           25       53       28
5           56.5       25       52       28.3
6           55.2       27       50       29.7
7           54.7       30       50       32.1
8           54.5       30       49       32.6
9           52.8       30       49       33.7
10           51.1       31       49       44.1
11           44.8       32       48       42.9
12           44       33       47       40.7
13           59.4       39       47       40.2
14           59.8       41       45       40
15           61.7       43       45       39.9
16           62.5       44       43       39.6
17           62.6       45       43       38.5
18           64.6       60       41       38.4
19           64.9       57       40       38
20           65.3       56       40       37.4
21           65.7       56       40       34.5
22           66.1       49       40       34.4
23           68.2       48       40       44.4
24           71.8       48       35       44.6
25           71.7       46       35       44.8
26           71.3       46       35       44.8
27           70.1       60       36       45.6
28           69.9       63       37       46.5
29           69.8       63       38       47.5
30           69.6       63       39       49
31           68.8       64       39       51.4
32           68.5       68       39       52.6
33           72.6       72       34       52.9
34           73.9       75       34       54.8
35           75.3       76       33       55.1
36           81.6       77       31       55.2
37           83.7       79       30       55.6

                                          
                                          
a) What portion of the variation in the Output is explained by the 3 independent variables?                                          
b) What output would you expect for a 40-year old employee who has 50 hours of training and is making $55,450?                                          
c) Based on this model, productivity                                           
d) Based on this model, productivity                                           
e) Comment on the quality of your regression result. That is, how strong or weak it is?      

In: Statistics and Probability

A school psychologist wishes to determine whether a new anti-smoking film actually reduces the daily consumption...

A school psychologist wishes to determine whether a new anti-smoking film actually reduces the daily consumption of cigarettes by teenage smokers. The mean daily cigarette consumption is calculated for each of eight teenage smokers during the month before and the month after the film presentation, with the following results: MEAN DAILY CIGARETTE CONSUMPTION

SMOKER NUMBER BEFORE FILM (X1) AFTER FILM (X2)

1 28 26

2 29 27

3 31 32

4 44    44

5 35 35

6 20 16

7 50 47

8 25 23

A) Is there a significant difference in the number of cigarettes smoked before the film as compared to the number of cigarettes smoked after the film?

B) What does this NOT necessarily mean?

C) What might be done to improve the design of this experiment?

In: Statistics and Probability

A school psychologist wishes to determine whether a new anti-smoking film actually reduces the daily consumption...

A school psychologist wishes to determine whether a new anti-smoking film actually reduces the daily consumption of cigarettes by teenage smokers. The mean daily cigarette consumption is calculated for each of eight teenage smokers during the month before and the month after the film presentation, with the following results: MEAN DAILY CIGARETTE CONSUMPTION

SMOKER NUMBER BEFORE FILM (X1) AFTER FILM (X2)

1 28 26

2 29 27

3 31 32

4 44 44

5 35 35

6 20 16

7 50 47

8 25 23

A) Is there a significant difference in the number of cigarettes smoked before the film as compared to the number of cigarettes smoked after the film?

B) What does this NOT necessarily mean?

C) What might be done to improve the design of this experiment?

In: Statistics and Probability

A BLS labor market survey of two households has gathered the following data: Household 1: Candy...

A BLS labor market survey of two households has gathered the following data:

Household 1: Candy worked 20 hours last week setting up her internet shopping business. The rest of the week she completed application forms and attended two job interviews. Husband Jerry worked 40 hours at his work at GM. Daughter Meg, a student, worked 10 hours at her weekend job at Starbucks.
Household 2: Ari had no work last week but was going to be recalled to his regular job in two weeks. Partner Costa, after months of searching for a job and not being able to find one, has stopped looking and will be back to school.

Classify each of the 5 people into the labor market category used by the BLS.

In: Statistics and Probability

As a production manager of Chifwamba enterprise, you are given the following output, price and total...

As a production manager of Chifwamba enterprise, you are given the following output, price and total cost data facing a firm.

Output

Total Cost

Price

Fixed Cost (FC)

Variable Cost (VC)

Marginal Cost (MC)

Average Fixed Cost (AFC)

Average Variable Cost (AVC)

Marginal Revenue (MR)

Total Revenue (TR)

Total Economic Profit

0

50

134

1

100

132

2

128

130

3

148

128

4

162

126

5

180

124

6

200

122

7

225

120

8

254

118

9

292

116

10

350

114

11

385

112

  1. Complete the above table by calculating FC, VC, MC, AVC, AFC, MR, TR, and Economic Profits [10 Marks].
  2. Assuming that the above firm is in a perfectly competitive market structure, is it operating in the short run or long run? Justify your answer by giving two reasons                       [2 Marks]
  3. Graph the equilibrium solutions you found in a) for MC, MR, AVC, TVC. [3 Marks]

In: Economics

15 highly anxious students were randomly assigned so that 5 received behavioral therapy, 5 received cognitive...

15 highly anxious students were randomly assigned so that 5 received behavioral therapy, 5 received cognitive therapy, and 5 received psychoanalytic therapy. Later all 15 students were tested for anxiety (on a scale where the higher the score the greater the anxiety). The results of these measures appears below. On the basis of these data determine whether the therapies differ in their effectiveness.

          Anxiety Scores for Students Receiving Various Types of Therapy

                       Behavioral     Cognitive       Psychoanalytic

                                5                    5                      8

                                4                    5                      7

                                8                    7                      8

                                7                    7                      6

                                6                    6                      6

a) what is the inferential statistic? (choose one)

Two-independent-samples t test

•Related-samples t test

One-way between-subjects ANOVA

One-way repeated-measures (within-subjects) ANOVA

Two-way between-subjects ANOVA

•Regression/correlation

•Chi-square test for independence

b) what are the critical value(s)?

c) reject or accept null hypothesis?(yes or no)

In: Statistics and Probability

The data shown to the right represent the age​ (in weeks) at which babies first​ crawl,...

The data shown to the right represent the age​ (in weeks) at which babies first​ crawl, based on a survey of 12 mothers. Complete parts​ (a) through​ (c) below. 52 30 44 35 47 37 56 26 54 44 35 28 Click here to view the table of critical t-values. LOADING... Click here to view page 1 of the standard normal distribution table. LOADING... Click here to view page 2 of the standard normal distribution table. LOADING... ​(a) Draw a normal probability plot to determine if it is reasonable to conclude the data come from a population that is normally distributed. Choose the correct answer below. A. 20 30 40 50 60 -2 -1 0 1 2 Age (in weeks) Expected z-score A normal probability plot has a horizontal axis labeled "Age (in weeks)" from 20 to 60 in increments of 5 and a vertical axis labeled "Expected z-score" from negative 2 to 2 in increments of 0.5. The graph contains 12 plotted points that follow the general pattern of a line that falls from left to right through (30, 1) and (50, negative 1), with slight deviation from the line pattern at the tails. The 12 plotted points have coordinates as follows: (26, 1.6); (28, 1.1); (30, 0.8); (35, 0.5); (35, 0.3); (37, 0.1); (44, negative 0.1); (44, negative 0.3); (47, negative 0.5); (52, negative 0.8); (54, negative 1.1); (56, negative 1.6). All coordinates are approximate. B. 20 30 40 50 60 -4 -2 0 2 4 Age (in weeks) Expected z-score A normal probability plot has a horizontal axis labeled "Age (in weeks)" from 20 to 60 in increments of 5 and a vertical axis labeled "Expected z-score" from negative 4 to 4 in incrementservals of 1. The graph contains 12 plotted points that follow the general pattern of a line that rises from left to right through (30, negative 2) and (50, 2), with slight deviation from the line pattern at the tails. The 12 plotted points have coordinates as follows: (26, negative 3.3); (28, negative 2.3); (30, negative 1.6); (35, negative 1); (35, negative 0.6); (37, negative 0.2); (44, 0.2); (44, 0.6); (47, 1); (52, 1.6); (54, 2.3); (56, 3.3). All coordinates are approximate. C. 20 30 40 50 60 -2 -1 0 1 2 Age (in weeks) Expected z-score A normal probability plot has a horizontal axis labeled "Age (in weeks)" from 20 to 60 in increments of 5 and a vertical axis labeled "Expected z-score" from negative 2 to 2 in incrementstervals of 0.5. The graph contains 12 plotted points that follow the general pattern of a line that rises from left to right through (30, negative 1) and (50, 1), with slight deviation from the line pattern at the tails. The 12 plotted points have coordinates as follows: (26, negative 1.6); (28, negative 1.1); (30, negative 0.8); (35, negative 0.5); (35, negative 0.3); (37, negative 0.1); (44, 0.1); (44, 0.3); (47, 0.5); (52, 0.8); (54, 1.1); (56, 1.6). All coordinates are approximate. D. 20 30 40 50 60 -4 -2 0 2 4 Age (in weeks) Expected z-score A normal probability plot has a horizontal axis labeled "Age (in weeks)" from 20 to 60 in increments of 5 and a vertical axis labeled "Expected z-score" from negative 4 to 4 in increments of 1. The graph contains 12 plotted points that follow the general pattern of a line that falls from left to right through (30, 2) and (50, negative 2), with slight deviation from the line pattern at the tails. The 12 plotted points have coordinates as follows: (26, 3.3); (28, 2.3); (30, 1.6); (35, 1); (35, 0.6); (37, 0.2); (44, negative 0.2); (44, negative 0.6); (47, negative 1); (52, negative 1.6); (54, negative 2.3); (56, negative 3.3). All coordinates are approximate. Is it reasonable to conclude that the data come from a population that is normally​ distributed? A. ​Yes, because the plotted values are approximately linear. B. ​No, because the plotted values are not linear. C. ​No, because there are not enough values to make a determination. D. ​Yes, because the plotted values are not linear. ​(b) Draw a boxplot to check for outliers. Choose the correct answer below. A. 20 30 40 50 60 A boxplot has a horizontal axis labeled from 20 to 60 in increments of 5. The boxplot has the following five-number summary: 26, 32.5, 40.5, 49.5, 56. All values are approximate. B. 20 30 40 50 60 A boxplot has a horizontal axis labeled from 20 to 60 in increments of 5. The boxplot has the following five-number summary: 26, 32.5, 45, 54, 56. All values are approximate. C. 20 30 40 50 60 A boxplot has a horizontal axis labeled from 20 to 60 in increments of 5. The boxplot has the following five-number summary: 26, 37, 40.5, 49.5, 56. All values are approximate. D. 20 30 40 50 60 A boxplot has a horizontal axis labeled from 20 to 60 in increments of 5. The boxplot has the following five-number summary: 26, 37, 45, 54, 56. All values are approximate. Does the boxplot suggest that there are​ outliers? A. ​No, there are no points that are greater than the third quartile or less than the first quartile. B. ​Yes, there is at least one point that is greater than the third quartile or less than the first quartile. C. ​Yes, there is at least one point that is outside of the​ 1.5(IQR) boundary. D. ​No, there are no points that are outside of the​ 1.5(IQR) boundary. ​(c) Construct and interpret a 95​% confidence interval for the mean age at which a baby first crawls. Select the correct choice and fill in the answer boxes to complete your choice. ​(Round to one decimal place as​ needed.) A. The lower bound is nothing weeks and the upper bound is nothing weeks. We are 95​% confident that the mean age at which a baby first crawls is outside of the confidence interval. B. The lower bound is nothing weeks and the upper bound is nothing weeks. We are 95​% confident that the mean age at which a baby first crawls is within the confidence interval. Click to select and enter your answer(s).

In: Statistics and Probability