Suppose a sample of statistics students (N = 30) has a distribution of grades with a mean of 70 and standard deviation of 15. What is the standard error of the mean?
What will be an ideal response?
2.74.
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In cost?benefit analysis, opportunity costs are:
a. the direct costs of funding a given program. b. the value of other programs on which the resources could have been used. c. the cost of pursuing unanticipated opportunities that arise while doing research. d. social costs to the participants in programs.
IQ scores are normally distributed with a mean ยต = 100 and a standard deviation ? = 15. Based on this distribution, determine
a. the percentage of IQ scores between 100 and 120. b. the probability of selecting a person at random having an IQ between 100 and 120. c. the percentage of IQ scores between 88 and 100. d. the probability of selecting a person at random having an IQ between 88 and 100. e. the percentage of IQ scores that are 110 or above. f. the probability of selecting a person at random having an IQ of 110 or above. What would be an ideal response?
Menopause is associated with the following:
A) sexual activity in older women helps maintain vaginal lubrication. B) HRT cannot protect against lower urinary tract infections. C) it impedes sexual activity from a physiological perspective. D) sleep disturbances are rare for postmenopausal women.
Mrs. W has a long history of alcohol abuse. Though she has made several failed attempts to quite, she is now convinced that alcohol is affecting her heart and liver and she decides to stop drinking. She refuses medical supervision. Several days after deciding to quit, she arrives at the clinic without making an appointment and demands to see her social worker. She is loud and demanding and seems disheveled and uncoordinated. She then abruptly leaves the clinic. The social worker might conclude that Mrs. W:
a. is going through alcohol withdrawal and needs medical attention b. wants the social worker's help in managing her discomfort c. is intoxicated d. may be experiencing delusions