The Pearson correlation is calculated for a sample of n = 20 individuals. If a hypothesis test is used to determine whether the correlation is significant, what df value would be used for the t statistic?
a. 18 c. 20
b. 19 d. 21
A
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You visit a nearby mall and look through two department stores that cater to two different kinds of shoppers. If you looked in the maternity clothes section of each store, you would be likely to see that
a. in the low-status store, the maternity clothes are near the baby clothes, but in the high-status store, the maternity clothes are near the "luxury clothing.". b. in the low-status store, maternity clothes are near the uniforms. c. in the low-status store, maternity clothes are much more visible, so that pregnant women are encouraged to feel special. d. in both cases, maternity clothes are close to the sportswear.
Which distinct period of development was the first to be recognized?
a. Childhood b. Adolescence c. Middle age d. Old age
Research results indicate that the more time individuals spend watching educational television programs as preschool children, the higher their high school grades will be. This is an example of a ____ relationship between variables
a. cause-and-effect b. coincidental c. positive d. negative
The same level of a neurochemical substance, acting as a neurotransmitter, having different effects depends on what?
A. Physiological history B. Biological history C. Sociological history D. Psychological history