In a study on the effects of amount of sleep on driving performance, researchers predict that those in the group that is allowed more sleep will exhibit better driving performance. The researchers are using a _____ hypothesis
a. two-tailed
b. directional
c. one-tailed
d. one-tailed (also called directional)
d
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Other countries do significantly better than the United States in preventing infant mortality by providing which of the following social programs?
A. better nutrition for pregnant mothers B. paid maternity leave for pregnant mothers C. up to five years of paid leave for fathers and co-parents D. birth control
Regarding GHB, which of the following statements is FALSE?
a. Chronic use of GHB has been shown to lead to brain damage. b. Users of GHB describe its effects as being similar to amphetamines. c. Two out of three frequent users of GHB have lost consciousness after taking it. d. Potentially fatal doses of GHB are only three times the amount typically taken by users.
In technical terms, the techniques individuals use to reach to solve problems are referred to as ______________
FIll in the blank with correct word.
The number of cells in a cross-tabulation table equals _____
a. the number of columns b. the number of rows c. the product of the rows and columns d. the number of nominal variables