Essentials Of Statistics For Business & Economics
9th Edition
ISBN: 9780357045435
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: South-Western College Pub
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Textbook Question
Chapter 10.4, Problem 31E
Impact of Pinterest on Purchase Decisions. Forbes reports that women trust recommendations from Pinterest more than recommendations from any other social network platform (https://www.forbes.com/sites/marketshare/2012/03/20/why-brand-managers-need-to-take-an-interest-in -pinterest/#5e3b22fb6375). But does trust in Pinterest differ by gender? The following sample data show the number of women and men who stated in a recent sample that they trust recommendations made on Pinterest.
- a. What is the point estimate of the proportion of women who trust recommendations made on Pinterest?
- b. What is the point estimate of the proportion of men who trust recommendations made on Pinterest?
- c. Provide a 95% confidence interval estimate of the difference between the proportion of women and men who trust recommendations made on Pinterest.
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what does the scatterplot suggest?
A study of the career plans of young women and men sent questionnaires to all members of the senior class in a College of Business Administration at the University of Illinois. One question asked which major within the business program the student had chosen. Another question asked about their job status, whether they worked full-time (40+ hours/week) or part-time (<40 hours/week). Here are the data from the students who responded.
accounting
administration
economics
total
work full time
68
91
5
164
work part time
56
40
6
102
total
124
131
11
266
The expected number of responses were tabulated as the following:
accounting
administration
economics
total
work full time
76.45
80.77
6.78
164
work part time
47.55
50.23
4.22
102
total
124
131
11
266
Conduct a χ2 test at α = .005 to determine if the job status of the students is independent of their choice of major.
On all hypothesis test: 1) clearly state the null and alternative hypotheses; 2) sketch a graph…
You may need to use the appropriate technology to answer this question.
The American Association of Individual Investors (AAII) On-Line Discount Broker Survey polls members on their experiences with discount brokers. As part of the survey, members were asked to rate the quality of the speed of execution with their broker as well as provide an overall satisfaction rating for
electronic trades. Possible responses (scores) were no opinion (0), unsatisfied (1), somewhat satisfied (2), satisfied (3), and very satisfied (4). For each broker summary scores were computed by calculating a weighted average of the scores provided by each respondent. Suppose a portion of the survey results
follow.
Brokerage Speed Satisfaction
O
Ho: B₁ * 0
Ha: B₁:
= 0
Ho: B₁ ≥ 0
Ha: B₁ <0
Ho: B₁:
Ha: B₁ * 0
= 0
|Ọ Ho: Bo #0
Ha: Bo
= 0
A
Ho: Po = 0
Ha: Bo # 0
B
с
D
E
F
G
H
I
J
K
3.4
3.3
3.4
3.6
3.2
3.8
3.8
2.6
2.7
4.0
2.5
3.5
3.6
3.9
These ratings data on x = the quality of the speed of execution and y = overall…
Chapter 10 Solutions
Essentials Of Statistics For Business & Economics
Ch. 10.1 - The following results come from two independent...Ch. 10.1 - 2. Consider the following hypothesis test.
The...Ch. 10.1 - Consider the following hypothesis test....Ch. 10.1 - 4. Condé Nast Traveler conducts an annual survey...Ch. 10.1 - The USA Today reports that the average expenditure...Ch. 10.1 - Hotel Price Comparison. Suppose that you are...Ch. 10.1 - Supermarket Customer Satisfaction. Consumer...Ch. 10.1 - Increases in Customer Satisfaction. Will improving...Ch. 10.2 - The following results are for independent random...Ch. 10.2 - Consider the following hypothesis test:...
Ch. 10.2 - Consider the following data for two independent...Ch. 10.2 - Miles Driven Per Day. The U.S. Department of...Ch. 10.2 - Annual Cost of College. The increasing annual cost...Ch. 10.2 - Salaries of Recent College Graduates. The Tippie...Ch. 10.2 - Hotel Prices. Hotel room pricing changes over time...Ch. 10.2 - Effect of Parents’ Education on Student SAT...Ch. 10.2 - Comparing Financial Consultant Ratings....Ch. 10.2 - Comparing Length of Flight Delays. The success of...Ch. 10.3 - Consider the following hypothesis test.
The...Ch. 10.3 - The following data are from matched samples taken...Ch. 10.3 - Television Commercials and Product Purchase...Ch. 10.3 - First-Quarter Stock Market Performance. The price...Ch. 10.3 - Credit Card Expenditures. Bank of America’s...Ch. 10.3 - Domestic Airfare. The Global Business Travel...Ch. 10.3 - SAT Scores. The College Board SAT college entrance...Ch. 10.3 - PGA Tour Scores. Scores in the first and fourth...Ch. 10.3 - Price Comparison of Smoothie Blenders. A personal...Ch. 10.4 - Consider the following results for independent...Ch. 10.4 - Consider the hypothesis test
The following...Ch. 10.4 - Corporate Hiring Outlook. A Businessweek/Harris...Ch. 10.4 - Impact of Pinterest on Purchase Decisions. Forbes...Ch. 10.4 - Mislabeled Fish. Researchers with Oceana, a group...Ch. 10.4 - Voter Turnout. Minnesota had the highest turnout...Ch. 10.4 - Oil Well Drilling. Oil wells are expensive to...Ch. 10.4 - Hotel Occupancy Rates. Tourism is extremely...Ch. 10.4 - Gender Differences in Raise or Promotion...Ch. 10.4 - Default Rates on Bank Loans. Carl Allen and Norm...Ch. 10 - Supermarket Checkout Lane Design. Safegate Foods,...Ch. 10 - SUV Lease Payments. Statista reports that the...Ch. 10 - Load Versus No-Load Mutal Funds. Mutual funds are...Ch. 10 - Kitchen Versus Bedroom Remodeling Costs. The...Ch. 10 - Effect of Siblings on SAT Scores. In Born...Ch. 10 - Change in Financial Security. Country Financial, a...Ch. 10 - Differences in Insurance Claims Based on Marital...Ch. 10 - Drug-Resistant Gonorrhea. Each year, more than 2...Ch. 10 - News Access Via Computer. The American Press...Ch. 10 - Par, Inc., is a major manufacturer of golf...
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