A researcher would like to examine the political attitudes for students at a local university. The researcher will evaluate a sample of 200 students but would like to be sure that the ages and genders of individuals in the sample accurately represent the ages and genders for the entire student body at the university. What would be the best sampling method for the researcher to use?
a. simple random sampling
b. stratified random sampling
c. proportionate stratified random sampling
d. systematic sampling
c
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During the Korean War, captors persuaded U.S. soldiers to cooperate by reinforcing small amounts of cooperation and then moving to greater levels. This procedure resembles which procedure?
a. The disequilibrium principle b. Shaping c. Classical conditioning d. Vicarious punishment
Within-groups degrees of freedom is the sample size minus one times the number of levels of each factor.
Answer the following statement true (T) or false (F)
True brains and spinal cords occur in
A. chordates. B. mollusca. C. crustacean. D. hemichordates.
Which is the correct order of brain waves associated with the highest to lowest levels of alertness?
A. gamma band, beta, alpha, theta, delta B. alpha, beta, gamma band, theta, delta C. alpha, beta, delta, gamma band, theta D. delta, theta, alpha, beta, gamma band