Statistics for The Behavioral Sciences (MindTap Course List)
10th Edition
ISBN: 9781305504912
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Chapter 17, Problem 8P
Automobile insurance is much more expensive for teenage drivers than for older drivers. To justify this cost difference, insurance companies claim that the younger drive are much more likely to be involved in costly accidents. To test this claim, are researcher obtains information about registered drivers from the department of motor vehicles and selects a sample of n = 300 accident reports from the police department .The motor vehicle department reports the percentage of registered driver: in each age category as follows: l6% are younger than age 20; 28 % are 20-29 years old; and 56% are age 30 or older. The number of accident reports for each age group is as follows:
| Under | Age | Age 30 |
| Age20 | 20-29 | or Older |
| 68 | 92 | 140 |
a. Do the data indicate that the distribution of accidents for the three age group is significantly different from the distribution of drivers? Test with
a = .05.
b. Write a sentence demonstrating how the outcome of the hypothesis test would appear in a research report
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Chapter 17 Solutions
Statistics for The Behavioral Sciences (MindTap Course List)
Ch. 17 - l. Parametric tests (such as t or ANOVA) differ...Ch. 17 - The student population at the state college...Ch. 17 - 3.A developmental psychologist would like to deter...Ch. 17 - Data from the Motor Vehicle Department indicate...Ch. 17 - Research has demonstrated that people tend to be...Ch. 17 - Suppose that the researcher fromthe previous...Ch. 17 - A professor in the psychology department would...Ch. 17 - Automobile insurance is much more expensive for...Ch. 17 - The color red is often associated with anger and...Ch. 17 - Prob. 10P
Ch. 17 - Prob. 11PCh. 17 - 12. Many businesses use some type of customer...Ch. 17 - In a classic study, Loftus and Palmer (1974)...Ch. 17 - In a study investigating freshman weight gain, the...Ch. 17 - Research results suggest that IQ scores for boys...Ch. 17 - 16. Gender difference in dream content are wen...Ch. 17 - 17. In a study similar to one conducted by Fallon...Ch. 17 - 18. A recent study indicate that people tend to...Ch. 17 - 19. Research indicates that people who volunteer...Ch. 17 - Cialdini, Reno, andKallgre,n (11990) examined how...Ch. 17 - Although the phenomenon is not well understood, it...Ch. 17 - In the Preview for this chapter we presented a...Ch. 17 - Research has demonstrated strong gender...
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