Problem 1: How much time do Americans living in or near cities spend waiting in traffic, and how much does waiting in traffic cost them per year? The file Congestion includes this cost for 31 cities. (Source: Data extracted from “The high Cost of Congestion,” Time, October 17, 2011, p.18.)
a) Compute the mean, median, first quartile, and third quartile.
b) Compute the range, interquartile range, variance, and standard deviation.
c) Compute the covariance between the time spent sitting in traffic and the cost of sitting in
traffic.
d) Computethecorrelationbetweenthetimespentsittingintrafficandthecostofsittingin
traffic.
e) Based on the results of (a) through (d), what conclusions might you reach concerning the
time spent waiting in traffic and the cost of waiting in traffic?
f) Create a histogram for each of the two variables: the time Americans living in or near cities
spend waiting in traffic and the cost of waiting per year.
g) Create a scatter plot for the two variables and fit a straight line to the points. Show the
equation of the fitted line.
| City | Annual Time Sitting in Traffic (hours) | Cost of Sitting in Traffic ($) |
| Boston | 47 | 980 |
| New York | 54 | 1126 |
| Philadelphia | 42 | 864 |
| Washington | 74 | 495 |
| Miami | 38 | 785 |
| Detroit | 33 | 687 |
| Cleveland | 20 | 383 |
| Minneapolis | 45 | 916 |
| Milwaukee | 27 | 541 |
| Chicago | 71 | 1568 |
| St. Louis | 30 | 642 |
| Nashville | 35 | 722 |
| Memphis | 23 | 477 |
| Atlanta | 43 | 824 |
| New Orleans | 35 | 746 |
| Omaha | 21 | 389 |
| Wichita | 20 | 379 |
| Dallas | 45 | 924 |
| Houston | 57 | 1171 |
| Denver | 49 | 993 |
| Albuquerque | 25 | 525 |
| Phoenix | 35 | 821 |
| Salt Lake City | 27 | 512 |
| Las Vegas | 28 | 512 |
| Boise | 19 | 345 |
| Seattle | 44 | 942 |
| Portland | 37 | 744 |
| San Francisco | 50 | 1019 |
| San Jose | 37 | 721 |
| Los Angeles | 64 | 1334 |
| San Diego | 38 | 794 |
In: Statistics and Probability
I'm not sure if this is a good issue statement for short case study. Thanks for the help!
An American multinational widely diversified media and entertainment organization, Disney Company which started their journey from 1923 are now recognized as one of the most successful enterprise in the century. Bob Iger who has lead the company with his magical, yet fundamental and strong business strategy to overcome the barriers that Disney faced in the last ten years in his career as a newly appointed CEO from 2005. One of the main issues that Disney faced entered from the mass diversification and acquisition while expanding their business firms into three main divisions, Walt Disney Parks and Resorts, Disney Media Networks, and Disney Consumer Products and Interactive Media. The main issue in this process was the inability to maintain a neutral and open behavior and lack of communication in team based works. Two external environmental factors involved in diversification process are analyzed in the report; political as in dealing with local government where Disney expands their theme park in other countries and technological factors that is required to produce content that satisfies customer demand as well as producing high quality content. Understanding these issues and implementing preventative tools will seize the misleading of the company for the next ten years. Other possible issues and external environment factors are considered as out of scope in this report.
In: Economics
74-year-old widower, excellent pension, $500,000, long-term care insurance, no debt, and three children. In no more than 200 words:
In: Finance
use methods of descriptive statistics to summarize the data and comment on your findings -
|
Income ($1000s) |
Household Size |
Amount Charged ($) |
| 54 | 3 | 4,016 |
| 30 | 2 | 3,159 |
| 32 | 4 | 5,100 |
| 50 | 5 | 4,742 |
| 31 | 2 | 1,864 |
| 55 | 2 | 4,070 |
| 37 | 1 | 2,731 |
| 40 | 2 | 3,348 |
| 66 | 4 | 4,764 |
| 51 | 3 | 4,110 |
| 25 | 3 | 4,208 |
| 48 | 4 | 4,219 |
| 27 | 1 | 2,477 |
| 33 | 2 | 2,514 |
| 65 | 3 | 4,214 |
| 63 | 4 | 4,965 |
| 42 | 6 | 4,412 |
| 21 | 2 | 2,448 |
| 44 | 1 | 2,995 |
| 37 | 5 | 4,171 |
| 62 | 6 | 5,678 |
| 21 | 3 | 3,623 |
| 55 | 7 | 5,301 |
| 42 | 2 | 3,020 |
| 41 | 7 | 4,828 |
| 54 | 6 | 5,573 |
| 30 | 1 | 2,583 |
| 48 | 2 | 3,866 |
| 34 | 5 | 3,586 |
| 67 | 4 | 5,037 |
| 50 | 2 | 3,605 |
| 67 | 5 | 5,345 |
| 55 | 6 | 5,370 |
| 52 | 2 | 3,890 |
| 62 | 3 | 4,705 |
| 64 | 2 | 4,157 |
| 22 | 3 | 3,579 |
| 29 | 4 | 3,890 |
| 39 | 2 | 2,972 |
| 35 | 1 | 3,121 |
| 39 | 4 | 4,183 |
| 54 | 3 | 3,730 |
| 23 | 6 | 4,127 |
| 27 | 2 | 2,921 |
| 26 | 7 | 4,603 |
| 61 | 2 | 4,273 |
| 30 | 2 | 3,067 |
| 22 | 4 | 3,074 |
| 46 | 5 | 4,820 |
| 66 | 4 | 5,149 |
In: Statistics and Probability
What is Instagram’s BMH? What problem do they solve for their customers? Why should their customers care?
In: Economics
Loan defaults are when ________.
customers pay back their loans
customers pay back their loans early
customers do not repay their loans
conspicuous consumption happens
A well-run bank will ________.
assume all borrowers will pay their loans on time
not factor in missing payment into its planning
not factor in risk of foreclosures
assume some borrowers will not repay their loans on time
Credit is
a way to buy futures and options in the open market.
a tool for buying things you cannot afford to pay for all at once.
a way to purchase items smaller amounts over a long period of time.
a way to purchase goods using a debit card.
Which of the following does NOT qualify as "money"?
commodity money
the U.S. dollar
barter
fiat money
Consumers must choose whether they prefer to consume goods, including money, now or in the future. This is known as:
consumer confidence.
intertemporal decision making.
the law of demand.
Which is true about a certificate of deposit (CD)?
It pays a lower interest rate than a savings account.
There is a penalty to withdrawal early.
The time frame to deposit money is variable.
When organizations need money, they often borrow through what main method?
Equity
Assets
Bonds
Liabilities
It has a variable interest rate.
conspicuous consumption.
How much money can a bank loan out, and make money on, of the banks’ newly received deposits?
The bank can loan out only up to the amount of its excess reserves.
Banks only lend out 25% of the deposit made by customers.
The bank can loan out what is equal to the full amount of the new deposits.
The bank can loan out up to the amount of their checkable deposits.
Equilibrium in financial markets occurs at an interest rate where the quantity of loanable funds demanded is
less than the quantity of loanable funds supplied.
greater than the quantity of loanable funds supplied.
Money that has no significant non-monetary value is called
commodity money.
fiat money.
extrinsic value money.
intrinsic value money.
misrepresented by the supply side of the economic model.
equal to the quantity of loanable funds supplied.
In: Economics
what do customers need ? where are the biggest unsatisfied customer needs ? what do customers really want to get done ? where ia demand increaaing ? declining ?
In: Economics
A retail carpet business has primarily residential customers together with a few commercial customers that make large purchases. Usually, the business sells an average of 100 square yards of carpet with a standard deviation of 90 square yards. The distribution of carpet sales is
Select one:
a. right-skewed.
b. left-skewed.
c. skewed, but we can’t tell whether it’s left-skewed or right-skewed
d. approximately symmetric, but not Normal.
e. approximately Normal.
f. There’s no way to tell what shape the distribution has.
g. It doesn't make sense to talk about the shape of this distribution.
Suppose the histogram in FIGURE 3 is the sampling distribution for sample averages from samples of size n = 25 from some population. Which of the following statements would be true if the sample sizes were increased to 150?
Select one:
a. The shape of the distribution would not change.
b. The shape of the distribution would be more bell-shaped.
c. The shape of the distribution would be more skewed.
"95% confident" means...
Select one:
a. if we took many random samples from the population, and computed a 95% confidence interval for each sample, we would expect 95% of the confidence intervals to contain the true parameter.
b. if we took one random sample from the population, we would expect 95% of the people in the sample to have a value within the confidence interval.
c. Both A and B are true
d. Neither A nor B are true
Using the sampling distribution in FIGURE 3, how likely is a sample mean around 76?
Select one:
a. Reasonably likely to occur from a sample of this size
b. Unusual but might occur occasionally
c. Extremely unlikely to ever occur
We have a large collection (5574) of real SMS text messages from cellphone users in 2010. 747 of these messages are classified as "spam", and the rest are not. The word “text” (or “txt”) is contained in 7.01% of legitimate (not spam) messages, and in 38.55% of all spam messages. What is the probability that a message is spam, given that it contains the word “text” (or “txt”)?
Select one:
a. 7.01%
b. 13.40%
c. 38.55%
d. 45.97%
e. 57.56%
f. 84.61%
g. We can't determine this probability.
In: Statistics and Probability
Real estate asset manager performs services for customers and bills the customers. Provide the
journal entry for these transactions?
Cash increases by $5,000; revenues increase by $5,000.
c. Cash increases by $5,000; accrued liability increase by $5,000.
d. Cash decrease by $5,000; Prepaid Expenses increase by $5,000.
Assignment 2
After several months of planning, Denise Murphy started a property management business for
the for the properties that its owners invest called ABC Property Management (“ABC”). The
following events occurred during its first month:
In: Accounting
14.Waiting times (in minutes) of customers at a bank where all customers enter a single waiting line and a bank where customers wait in individual lines at three different teller windows are listed below. Find the coefficient of variation for each of the two sets of data, then compare the variation
|
Bank A (single line) |
Bank B (individual lines) |
|
6.4 |
4.3 |
|
6.5 |
5.5 |
|
6.6 |
5.9 |
|
6.8 |
6.3 |
|
7.1 |
6.7 |
|
7.4 |
7.6 |
|
7.4 |
7.8 |
|
7.7 |
8.4 |
|
7.7 |
9.4 |
|
7.8 |
9.7 |
The coefficient of variation for the waiting times at Bank A is ____%.
(Round to one decimal place as needed.)
The coefficient of variation for the waiting times at the Bank B is ____.
(Round to one decimal place as needed.)
Is there a difference in variation between the two data sets?
A.There is no significant difference in the variations.
B.The waiting times at Bank B have considerably less variation than the waiting times at Bank A.
c.The waiting times at Bank A have considerably less variation than the waiting times at Bank B.
In: Math