A cluster sample usually does not qualify as a true random sample because ____
a. the specific groups selected are not selected by a random process
b. the selections are not independent of each other
c. the individuals within each group are usually not independent
d. replacement is typically included in the sampling procedure
c
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To shift your attention from one item to another, you have to move your eyes
a. True b. False Indicate whether the statement is true or false
The research on women's studies courses shows that they
a. do not have a significant effect on the attitudes of male students. b. can change attitudes, but not patterns of thinking about issues. c. can increase women's self-confidence. d. are more likely to have an effect on European American women, rather than women of color.
If a neurotransmitter key opens the receptor's lock, then the neurotransmitter is said to be:
a. at the threshold c. positively charged b. excitatory d. at an action potential
Penis size is related to a man's
a. height b. weight c. race d. none of the above