If a health psychologist wants to know if a new type of exercise improves peoples’ health, would the psychologist use a one-tailed or two-tailed test and why?
A) One-tailed because the study is focused on whether the exercise increases health
B) One-tailed because the study is only examining the effects of exercise and does not take other factors into account
C) Two-tailed because the study will have to include healthy and unhealthy people
D) Two-tailed because there is no predicted direction of difference
Answer: A
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The concept of validity addresses whether
a. ethical violations are present in the study. b. the results relate to verified general theory. c. the study is measuring what it is designed to measure. d. the sample is random. e. the results are consistent over repeated trials.
Racial discrimination in professional sports is evident today in ________
a. the positions typically played by white and black players. b. the exclusion of African American players from professional sports. c. the fact that most managers and team owners are African American. d. the fact that women's sports attract less attention than men's sports.
Most Americans derive the greater part of their net worth from all of these asset types EXCEPT ______.
A. home equity B. bank deposits C. car equity D. interest payments
According to the text, why is the United States a meritocracy?
A. There is little movement from one class to another. B. Class movement is earned through individual effort. C. Inherited status is more powerful than effort. D. Political power is based on wealth.