The decision to reject the null hypothesis using the Z test is made
A) if the Z score is less than –1 or greater than 1.
B) if the Z score is greater than 2.5.
C) by comparing the Z score needed to reject the null hypothesis to the actual Z score of the sample.
D) by comparing the standard deviation of the sample (SD) to the standard deviation of the population (?).
C
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While there are far fewer male centenarians than female, the men who do reach this milestone tend to be stronger physically and cognitively than the women
Indicate whether the statement is true or false.
A rare disorder involving the facial nerves leaves the face expressionless. According to the facial feedback hypothesis, people with this disorder should:
a. be unable to recognize the facial expression of other people b. not require a cognitive interpretation before experiencing an emotion c. experience less emotion themselves d. not show social comparison effects