Phoenix, a research assistant, is going to "draw names out of a hat" to select research participants for his study. Phoenix would be
a. choosing a random sample.
b. circumventing the proper protocol.
c. stratifying the sample.
d. doing a qualitative research study.
Answer: a
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a. have been found in boys, but not in girls. b. have not been found in either sex. c. may be related to how the brain processesdopamine and serotonin. d. can be treated with behavioral therapies.
You use the t distribution instead of normal distribution when the sample size is smaller than 30.
Answer the following statement true (T) or false (F)
Research conducted by Berndt & Mekos (1995) found which of the following benefits from the transition to secondary school among adolescents in the United States?
a. better skills in science and mathematics b. improved critical thinking skills c. closer relationships with parents d. greater independence in adolescents
Males are ________ likely than females to be left-handed
a. much less b. slightly more c. much more d. slightly less