If the null hypothesis is true, then the alternative hypothesis _____
a. must also be true c. might be true
b. cannot be true d. cannot say
B
The null and alternative hypotheses are mutually exclusive. If one is true the other cannot be true.
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Changes in a person's height and weight during middle adulthood usually are accompanied by a decline in which other attribute?
A. strength B. skin pigmentation C. mental acuity D. feelings of security
Which psychological concept is illustrated in this photo?
(Credit: Stephen Barnes/Military/Alamy Stock Photo)
A. Bystander effect B. Social loafing C. Groupthink D. Social facilitation
Which of the following structures is part of the brain stem?
a. Amygdala b. Medulla c. Thalamus d. Hypothalamus
Which of the following is accurate about one's ability to detect lies?
a) Neither men nor women are especially good at detecting deception. b) Married people are better than single people at detecting lies. c) Women are better than men at detecting lies. d) Older people can detect deception better than younger people.