If all the possible random samples with n = 36 scores are selected from a normal population with µ = 80 and ? = 18, and the mean is calculated for each sample, then what is the average of all the sample means?
A) ?2
B) ?6
C) ?80
D) ?It cannot be determined without additional information.
C
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If an EEG indicates that a sleeper has been in REM for most of the last hour, what is most likely?
a. The sleeper has already been asleep for several hours. b. The sleeper has just begun to go to sleep. c. The sleeper is near the middle of the night's sleep. d. The sleeper is having unpleasant dreams.
What are the three stages of development of moral reasoning skills according to Kohlberg's theory of moral development (1976, 1984)?
a) Prefigurative, cofigurative, and postfigurative morality b) Classical, operant, and linear morality c) Authoritative, permissive, and submissive morality d) Preconventional, conventional, and postconventional morality
Codeine, heroin, and morphine all ____ and are derived from the ____
a. stimulate the central nervous system; cannabis plant b. stimulate the central nervous system; coca plant c. depress the central nervous system; opium plant d. depress the central nervous system; marijuana plant
If you cram for a psychology exam and then later the same night cram for a history exam, your memory for psychology will be less accurate because of
a. disuse. b. memory decay. c. proactive interference. d. retroactive interference.