Statistics for Business & Economics
12th Edition
ISBN: 9781285528830
Author: David R. Anderson
Publisher: Cengage Learning US
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Textbook Question
Chapter 1, Problem 3SE
Refer to Table 1.6.
- a. What is the average miles per gallon for city driving?
- b. On average, how much higher is the miles per gallon for highway driving as compared to city driving?
TABLE 1.6 FUEL ECONOMY INFORMATION FOR 10 AUTOMOBILES
| Car | Size | Cylinders | City MPG | Highway MPG | Fuel |
| Audi A8 | Large | 12 | 13 | 19 | Premium |
| BMW 328Xi | Compact | 6 | 17 | 25 | Premium |
| Cadillac CTS | Midsize | 6 | 16 | 25 | Regular |
| Chrysler 300 | Large | 8 | 13 | 18 | Premium |
| Ford Focus | Compact | 4 | 24 | 33 | Regular |
| Hyundai Elantra | Midsize | 4 | 25 | 33 | Regular |
| Jeep Grand Cherokee | Midsize | 6 | 17 | 26 | Diesel |
| Pontiac G6 | Compact | 6 | 15 | 22 | Regular |
| Toyota Camry | Midsize | 4 | 21 | 31 | Regular |
| Volkswagen Jetta | Compact | 5 | 21 | 29 | Regular |
- c. What percentage of the cars have four-cylinder engines?
- d. What percentage of the cars use regular fuel?
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Refer to Table 1.6.
a. What is the average cost for the tablets?
b. Compare the average cost of tablets with a Windows operating system to the average cost of tablets with an Android operating system.
c.What percentage of tablets use a CPU manufactured by Tl OMAP?
d. What percentage of tablets use an Android operating system?
b. Round off in 4 decimal places. With complete solution and box the final answer.
4. Use this data from the HANES5 survey to estimate the average weight of men 18 and over
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average height: 69 inches
average weight: 190 pounds
r = 0.41
SD 3 inches
SD 42 pounds
Chapter 1 Solutions
Statistics for Business & Economics
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