A researcher is interested in whether students who play sports have a higher or lower body mass index (BMI) than students in the general population. The researcher is unsure whether playing sports will decrease body mass (due to more calories burned) or increase body mass (due to more muscle mass). This is a _____ -tailed test and the zcv is _____
a. two; ±1.96
b. one; ±1.65
c. two; ±1.65
d. one; ±1.96
a
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One of the most recent empirical validations of traditional East Indian medicine relates to the use of an herbal remedy (called forskolin, isolated from the Coleus forskohlii plant) for the treatment of:
a. heart disease c. insomnia b. impotence d. obesity
A scientist rings a bell just prior to presenting meat to the dogs in his laboratory. After
several pairings, the dogs begin salivating when the bell is rung, even when no meat is presented. In this study, the meat is the ______. a. unconditioned stimulus c. conditioned stimulus b. unconditioned response d. conditioned response
What is the most frequent cause of death in adolescents?
A. sexually transmitted infections B. accident C. cancer D. drug overdose
Effects of specific drugs are difficult to assess when polydrug abuse occurs because:
a. drugs can cancel each other’s effects b. drugs can increase the effect of other drugs c. polydrug users differ from those using few or no drugs d. all of the above