The standard deviation of the population of individual scores is 15. A
random sample of 40 subjects yields a mean of 105.
a. Calculate the standard error of the mean.
b. Test the hypothesis, via the z test, that this sample could be
representative of a population whose mean is known to be 100.
a SEm=2.37
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Which of the following prevention strategies looks promising for children who are at risk for later antisocial personality disorder?
a. A training program for parents of toddlers (ages 1½ to 2½ years) b. A program for families with a high degree of family dysfunction c. A program for families where at least one parent has a history of antisocial personality disorder d. All of the above
In which stage of the general adaptation syndrome are the external symptoms of the body's adjustment to stress the LEAST visible?
a. alarm reaction b. regulation stage c. stage of resistance d. stage of exhaustion
Which one of the following is not a threat to the internal validity of an experiment?
a. maturation b. regression effect c. random error d. mortality
Individuals who do not surrender their culture in order to assimilate into the dominant culture
a. experience greater discrimination. b. have lower levels of self-esteem. c. have relatively higher levels of self-esteem. d. have higher rates of depression.