If two samples, each with n = 20 scores, are selected from the same population and both have the same mean (M = 53) and the same variance (s2 = 12), then they will also have the same t statistic
Indicate whether the statement is true or false
T
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Which of the following is TRUE concerning teen pregnancies in the United States?
a. Most are intentional pregnancies. b. Teens are likely to have more medical complications than pregnant young adults. c. The babies of teens are at lower risk for low birth weight and prematurity than those of young adults. d. Most teenagers who experience pregnancy are positively received by their peers for this decision and get a lotof support.
Research suggests that face-to-face interviews
a. increase the probability of stereotyped judgments. b. exacerbate gender preferences in hiring decisions. c. reduce, but do not eliminate, racial preferences in hiring decisions. d. produce hiring decisions that are perceived to be more open-minded, but are no different from decisions basedon evaluations of written materials.
Aging appears to have less of an effect on __________ than __________
a. endurance; strength b. body fat; muscle mass c. visual acuity; hearing d. muscle tone; bone and organ mass e. strength; agility
Psychologists use the scientific method for all but which of the following purposes?
a. Explanation b. Supposition c. Prediction d. Control