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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Question
Chapter 17, Problem 11P
To determine
Whether the distribution of preferences for older adults is significantly different from the distribution for college students.
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In Problem 10, a researcher asked college students to evaluate three new cell phone designs. However, the researcher suspects that college students may have criteria that are different from those used by older adults. To test this hypothesis, the researcher repeats the study using a sample of n=60 older adults in addition to a sample of n=60 students. The distribution of preference is as follows:
Design 1
Design 2
Design 3
Total
Student
27
20
13
60
Older Adult
21
34
5
60
Total
48
54
18
Do the data indicate that the distribution of preferences for older adults is significantly different from the distribution for college students? Test with α=.05.
Suppose we are now interested in taking random samples of 800 US adults instead of 150 and considering the sampling distribution of the corresponding sample proportions.
What effect, if any, does this increase in sample size have on the mean of the possible sample proportion values?
A. INCREASE
B. DECREASE
C. STAY THE SAME
Suppose we examined medical records of 500 individuals admitted to the hospital, and we cross-classified them by whether they had lung disease or some other disease and the number of cigs they smoked daily. The individuals in the sample were distributed as follows
1.What proportion of the sample both had lung cancer and smoked 25 or more cigs per day?
2.Of all individuals who had lung cancer, what proportion smoked fewer than 25 cigs per day?
3.What proportion of individuals in the sample smoked fewer than 25 cigs per day?
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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