18. A statistics student wants to compare his final exam score to his friend's final exam score in her anthropology class. Remembering what he learned about the advantages of Z scores, he asks his friend for her class mean and standard deviation on the anthropology exam, as well as her final exam score. Assume both distributions are roughly normally distributed. The information is as follows: Statistics student: Final exam score = 85; Class: M = 70; SD = 10. Anthropology student: Final exam score = 45; Class: M = 35; SD = 5. Whose score was better in relation to the other students who took their respective exams? A) the statistics student C) the anthropology student B) the scores were equal D) It is impossible to say without more information.

19) A normally distributed group of scores has a mean of 80 and a standard deviation of 3. For a z score of 2, which of the following options is closest to the raw score equivalent? A) 65 C) 95 E) 125 B) 85 D) 110

20) In the general population, husbands' scores on a particular test of marital intimacy are normally distributed with a mean of 140 and a standard deviation of 25. What percent score below 177? Choose the following option that is closest to your answer. A) -50 C) 40 E) 95 B) 0 D) 70

21) College students in general have a mean of 60 and a standard deviation of 8 on a particular measure of loneliness (scores are roughly normally distributed). What is the highest score that a student can have, and still be in the lowest 32% of scores? Choose the following option that is closest to your answer. A) -25 C) 30 E) 85 B) 0 D) 55

22) For a two-tailed hypothesis test using a significance level of .26 (26%), which of the following is closest to the critical z scores (z-scores at the points of rejection)? a) 0.25 c) 1.15 e) 2.0 b) 0.70 d) 1.50 Use the following information for the next four questions: In the general population, IQ is normally distributed with an average of 100 and a standard deviation of 10.

23) What raw score is the lowest limit of the middle 60%? Please choose the closest: A) -1 C) 8 E) 108 B) 0 D) 92

24) Now select the raw score that is the highest limit of the middle 60% of IQ scores. Choose the closest. A) -1 C) 8 E) 108 B) 0 D) 92

25) What is the lowest raw IQ score that someone could have and still be in the highest 40% of scores? Choose the closest. A) -1 C) 1 E) 103 B) 0 D) 6