STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
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Textbook Question
Chapter 3.2, Problem 31E
The results of Accounting Principals’ latest Workonomix survey indicate the average American worker spends $1092 on coffee annually (the Consumerist, January 20, 2012). To determine if there are any differences in coffee expenditures by age group, samples of 10 consumers were selected for three age groups (18–34, 35–44, and 45 and Older). The dollar amount each consumer in the sample spent last year on coffee is provided below.
| 18–34 | 35–44 | 45 and Older |
| 1355 | 969 | 1135 |
| 115 | 434 | 956 |
| 1456 | 1792 | 400 |
| 2045 | 1500 | 1374 |
| 1621 | 1277 | 1244 |
| 994 | 1056 | 825 |
| 1937 | 1922 | 763 |
| 1200 | 1350 | 1192 |
| 1567 | 1586 | 1305 |
| 1390 | 1415 | 1510 |
- a. Compute the
mean , variance, and standard deviation for the each of these three samples. - b. What observations can be made based on these data?
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Chapter 3 Solutions
STATISTICS F/BUSINESS+ECONOMICS-TEXT
Ch. 3.1 - Consider a sample with data values of 10, 20, 12,...Ch. 3.1 - Consider a sample with data values of 10, 20, 21,...Ch. 3.1 - Consider the following data and corresponding...Ch. 3.1 - Consider the following data. Period Rate of Return...Ch. 3.1 - Consider a sample with data values of 27, 25, 20,...Ch. 3.1 - Consider a sample with data values of 53, 55, 70,...Ch. 3.1 - The average number of minutes Americans commute to...Ch. 3.1 - The Wall Street Journal reported that the median...Ch. 3.1 - Which companies spend the most money on...Ch. 3.1 - Over a nine-month period, OutdoorGearLab tested...
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