Question: Question based on Problem A What is the two-tailed probability you calculated? QUESTION 14 Question based on Problem A What is your decision regarding whether

Question based on Problem A What is the two-tailed probability you calculated? QUESTION 14 Question based on Problem A What is your decision regarding whether to reject or retain the null hypothesis? 0 Reject the null hypothesis 0 Retain the null hypothesis QUESTION 15 The next three questions are based on the data for Problem B contained in the PDF le in the homework folder. Number of clients in which anxiety decreased? QUESTION 16 Question based on Problem B What is the one-tailed probability you calculated? Problem A Subject Pretest Posttest Change (+/-) 50 60 56 90 87 84 94 95 85 89 75 78 KOSOVOUAWN 96 94 84 80 75 76 75 79 79 80 80 86 13 85 86 14 83 85 15 75 80 Fifteen randomly selected students were tested on statistical knowledge before the first day of instruction and then at the end of the semester. Using a sign test with an alpha level of .05 two- tailed, determine whether the data suggest there was a significant difference between the pretest and posttest scores. Number participants with grades which improved: Two-tailed probability obtained (calculated): Decision: O Reject the null hypothesis O Fail to reject the null hypothesisProblem B Client Before After Change (+/-) 30 29 34 32 29 27 38 36 28 25 29 28 36 34 34 35 38 35 10 40 35 11 42 37 12 30 32 Twelve randomly selected individuals with anxiety participated in a research project designed to determine whether a short training program combining several well-supported techniques was effective in reducing anxiety. The anxiety scores of the individuals before and after the program was completed are listed below. Use a sign test with an alpha of .05 one-tailed to test the hypothesis that the combination of techniques is effective in reducing anxiety. Number of clients in which anxiety decreased: One-tailed probability obtained (calculated): Decision: O Reject the null hypothesis O Fail to reject the null hypothesisQUESTION 17 Question based on Problem B What is your decision regarding whether to reject or retain the null hypothesis? 0 Reject the null hypothesis 0 Retain the null hypothesis

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