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Annual sales, in millions of dollars, for 21 pharmaceutical companies follow. 8,072 1,319 1,798 8,524 2,361...

Annual sales, in millions of dollars, for 21 pharmaceutical companies follow. 8,072 1,319 1,798 8,524 2,361 10,956 585 14,138 6,194 1,776 2,705 1,302 10,078 7,179 3,859 4,167 709 2,042 3,507 5,562 7,974 Provide a five-number summary. Smallest value First quartile Median Third quartile Largest value Compute the lower and upper limits. Lower limit Upper limit Do the data contain any outliers? Johnson & Johnson's sales are the largest on the list at $14,138 million. Suppose a data entry error (a transposition) had been made and the sales had been entered as $41,138 million. Would the method of detecting outliers in part (c) identify this problem and allow for correction of the data entry error? Which of the following box plots accurately displays the data set?

In: Statistics and Probability

Hello is life expectancy ratio or interval level of measurement

Hello is life expectancy ratio or interval level of measurement

In: Statistics and Probability

(Varibale= interval or ration scale) Make four frequency distribution table (with small values of variable like...

(Varibale= interval or ration scale)
Make four frequency distribution table (with small values of variable like no more than 5 to6 values and have at least 30 scores in each of the data set.
The first frequency distribution table should be a distbution that is approximately normally shaped.
The second one should be a rectangular shape
The third one should be a symmetrical bimodal distrbition
And the fourth one should be a skewed distribution.

In: Statistics and Probability

The weights of newborn baby boys born at a local hospital are believed to have a...

The weights of newborn baby boys born at a local hospital are believed to have a normal distribution with a mean weight of 3915 grams and a variance of 429,025. If a newborn baby boy born at the local hospital is randomly selected, find the probability that the weight will be less than 4570 grams. Round your answer to four decimal places.

In: Statistics and Probability

home / study / business / operations management / operations management questions and answers / Using...

home / study / business / operations management / operations management questions and answers / Using The Case Analysis Below. Analyze The Case “Why Uber Can't Make Money” About 2400 ...

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Question: Using the Case analysis below. analyze the case “Why Uber Can't Make Money” about 2400 words in l...

Using the Case analysis below. analyze the case “Why Uber Can't Make Money”

about 2400 words in length

Last month, Uber reported a third-quarter loss of nearly $1.5 billion, bringing its 2017 year-to-date red ink to $3.2 billion. Losses of this magnitude are clearly not sustainable, and call for an explanation of why Uber has been unable to rein in ballooning costs and what it will need to do to survive, let alone prosper.

CASE ANALYSIS OUTLINE

Situational Analysis

            External Environmental Analysis (Outside of the organization)

Economic, Social, Political, Technological, Natural

           

Internal Environmental Analysis (Specific to the organization)

Market Analysis- Description of the market, Primary customers

Evaluation of Marketing Strategies

                        Product, Price, Distribution, Promotion

Evaluation of the other Functional Areas-

                        Finance, Production, Human Resources, Technology

Strengths, Weaknesses, Opportunities, and Threats (SWOT) Analysis

State the Main Problems facing the business/organization

Development of Strategic Alternatives (2)

Evaluation of Strategic Alternatives (2)

Recommendation of the better Alternative

Implementation Techniques for Recommended Alternative (How, when,

            where, why).

Control Procedures to keep Recommended Alternative on course.

In: Statistics and Probability

Sarah scores an 85 on an (IQ) test with a mean of 94 and a standard...

Sarah scores an 85 on an (IQ) test with a mean of 94 and a standard deviation of 10. At what percentile rank is she with respect to the rest of the population?

Please show work- thank you.

In: Statistics and Probability

You receive a year-end statement from your broker that details your stock ownership over the years,...

You receive a year-end statement from your broker that details your stock ownership over the years, and the total gain or loss over the holding period for each. You want to devise a method to make a meaningful comparison of the returns in order to determine which stock performed the best and which performed the worst. The problem is, the holding periods all have different starting and ending dates and are different lengths.

Stock returns
Stock   Buy date   Buy price (P0)   Sell date   Sell price (P1)   Total return
((P1-P0)/P0)
A   1/1/2002   16.00   1/1/2016   25.00   56.3%
B   1/1/2014   87.00   1/1/2015   80.00   -8.0%
C   1/1/2008   26.00   1/1/2014   28.00   7.7%
D   1/1/2001   17.50   1/1/2008   23.50   34.3%
E   1/1/2004   76.00   1/1/2007   68.00   -10.5%
F   1/1/2006   12.00   1/1/2016   13.00   8.3%


What is the best way to compare the returns of these stocks?
   Use the return over the entire holding period for each stock to compare
   Using the total return over the holding period for each stock, take the geometric mean to get the one year average return, and compare
   Find the dollar change of each stock (Sell price minus Buy price) and compare
   Using the total return over the holding period for each stock, take the straight average to get the one year average return, and compare

In: Statistics and Probability

13. Calculate the expected loss EL if k = $22,000, sigma = 0.7 and D =...

13. Calculate the expected loss EL if k = $22,000, sigma = 0.7 and D = 0.5.

14. A total of 10 units were tested over a 500-hour period. A total of 4 units failed after 10, 20, 70, and 400 hours. The other 6 did not fail during the 500-hour test. Calculate the failure rate.

15. The mean life of a diesel is 250,000 miles, with a standard deviation of 2,500 miles. What is the probability that it will wear out before 248,000 miles.

16. A component has a reliability of 0.99 for 600 hours of normal use. Determine the failure rate.

In: Statistics and Probability

Using the standard Normal distribution tables, what is the area under the standard Normal curve corresponding...

Using the standard Normal distribution tables, what is the area under the standard Normal curve corresponding to Z < 1.1?

In: Statistics and Probability

Give a plausible example of a three-variable research problem in which partial correlation would be a...

Give a plausible example of a three-variable research problem in which partial correlation would be a useful analysis. Define X1, X2, and Y. Make sure that you indicate which of your three variables is the "controlled for" variable ( X2). What results might you expect to obtain for this partial correlation, and how would you interpret your results (e.g., spurious correlation, mediation, moderation, and so on)?

In: Statistics and Probability

compute the 90%, 95%, and 99% confidence interval for N=282 Mean= 2.36 SD= 1.19 explain the...

compute the 90%, 95%, and 99% confidence interval for N=282 Mean= 2.36 SD= 1.19

explain the effect of confidence interval on the width of the interval

In: Statistics and Probability

Please use Excel and show steps!! Greentrop Pharmaceutical Products are the world leader in the area...

Please use Excel and show steps!! Greentrop Pharmaceutical Products are the world leader in the area of sleep aids. Its major product is “Dozealot”. The Research-and-Development Division has defined two alternatives to improve the quality of the product. These alternatives are simple reformulations of the product to minimize the side effects and to improve the product efficacy. To conduct an analysis, management has decided to consider the possible demands for the drug under each alternative. The following payoff table shows the projected profit in millions of dollars.If the decision maker knows nothing about the probabilities of three states of nature, what is the recommended decision using the optimistic, conservative, and minimax regret approaches?

Demand
Decision Alternatives Low Medium High
d1 $500 $350 $525
d2 $875 $300 $765

In: Statistics and Probability

Suppose x has a distribution with a mean of 70 and a standard deviation of 15....

Suppose x has a distribution with a mean of 70 and a standard deviation of 15. Random samples of size

n = 36

are drawn.

(a) Describe the

x distribution

and compute the mean and standard deviation of the distribution.

x

has  ---Select--- a binomial an unknown a geometric an approximately normal a normal a Poisson distribution with

mean μx =

and

standard deviation σx =  .


(b) Find the z value corresponding to

x = 75.

z =



(c) Find

P(x < 75).

(Round your answer to four decimal places.)

P(x < 75) =



(d) Would it be unusual for a random sample of size 36 from the x distribution to have a sample mean less than 75? Explain.

Yes, it would be unusual because less than 5% of all such samples have means less than 75.No, it would not be unusual because more than 5% of all such samples have means less than 75.    No, it would not be unusual because less than 5% of all such samples have means less than 75.Yes, it would be unusual because more than 5% of all such samples have means less than 75.

In: Statistics and Probability

Rent'R Cars is a multisite car rental company in the city. It is trying out a...

Rent'R Cars is a multisite car rental company in the city. It is trying out a new "return the car to the location most convenient for you" policy to improve customer service. But this means that the company has to constantly move cars around the city to maintain required levels of vehicle availability. The supply and demand for economy cars, and the total cost of moving these vehicles between sites, are shown below.

From\To D E F G Supply
A

$15

$16

$14

$6

70
B

8

7

13

6

35
C

14

9

15

12

100
Demand 55 60 50 40 205\205


a. Find the solution that minimizes moving costs using Microsoft Excel. (Leave no cells blank - be certain to enter "0" wherever required.)

From/To D E F G Supply
Candidate solution
A
B
C
Total shipped
Cost
A
B
C
Total costs

In: Statistics and Probability

An instructor believes that students do not retain as much information from the lecture on a...

An instructor believes that students do not retain as much information from the lecture on a Friday compared to a Monday. To test this belief, the instructor teaches a small sample of college students some pre-selected material from a single topic on statistics on a Friday and a Monday. All students received a test on the material. The differences in exam scores for material taught on Friday minus Monday are listed in the following table
to test this belief, the instructor teaches a small sample of college students some pre-selected material from a single topic on statistics on a Friday and on a Monday. All students received a test on the material. The differences in exam scores for material taught on Friday minus Monday are listed in the following table
+4.4
+1.0
-1.5
+3.3
+6.3
a. Find the confidence limits at a 95% CI for these related samples.
b. can we conclude that students retained more of the material taught in the Friday class?

In: Statistics and Probability