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##### psy 315 Chapter 3 problems

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solution

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Question;Chapter 2, Practice Problems: 8, 11, 12;Chapter 3, Practice Problems: 14, 15, 25;8. In a;study by Gonzaga et al. (2001), romantic couples answered;questions about how much they loved their partner and also were videotaped;while revealing something about themselves to their partner. The videotapes;were later rated by trained judges for various signs of affiliation.Table 2?8 (reproduced from their Table 2) shows some of the results. Explain to a;person who has never had a course in statistics the results for self-reported;love for the partner and for the number of seconds ?leaning toward the;partner.?;Table 2?8 Mean Levels of Emotions and Cue Display in Study 1;Women (n;= 60);Men (n;= 60);Indicator;M;SD;M;SD;Emotion;reports;Self-reported;love;5.02;2.16;5.11;2.08;Partner-estimated;love;4.85;2.13;4.58;2.20;Affiliation-cue;display;Affirmative;head nods;1.28;2.89;1.21;1.91;Duchenne;smiles;4.45;5.24;5.78;5.59;Leaning;toward partner;32.27;20.36;31.36;21.08;Gesticulation;0.13;0.40;0.25;0.77;Note: Emotions are rated on a scale of 0;(none) to 8 (extreme). Cue displays are shown as mean seconds;displayed per 60 s.;11.For the;following scores, find the (a) mean, (b) median, (c) sum of squared deviations;(d) variance, and (e) standard deviation;2, 2, 0;5, 1, 4, 1, 3, 0, 0, 1, 4, 4, 0, 1, 4, 3, 4, 2, 1, 0;12.;For the following scores;find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance;and (e) standard deviation;1,112, 1,245, 1,361, 1,372, 1,472;14.;On a standard measure of hearing ability, the mean is 300 and the;standard deviation is 20. Give the Z scores for persons who score (a);340, (b) 310, and (c) 260. Give the raw scores for persons whose Z;scores on this test are (d) 2.4, (e) 1.5, (f) 0, and (g) ?4.5.;15.;A person scores 81 on a test of verbal ability and 6.4 on a test of;quantitative ability. For the verbal ability test, the mean for people in;general is 50 and the standard deviation is 20. For the quantitative ability;test, the mean for people in general is 0 and the standard deviation is 5.;Which is this person?s stronger ability: verbal or quantitative? Explain your;answer to a person who has never had a course in statistics.;25.;You are conducting a survey;at a college with 800 students, 50 faculty members, and 150 administrators.;Each of these 1,000 individuals has a single listing in the campus phone;directory. Suppose you were to cut up the directory and pull out one;listing at random to contact. What is the probability it would be (a) a;student, (b) a faculty member, (c) an administrator, (d) a faculty member;or administrator, and (e) anyone except an administrator? (f) Explain your;answers to someone who has never had a course in statistics.

Paper#60186 | Written in 18-Jul-2015

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