Referring to the 20-point friendliness measure used in the first exercise of Chapter 1, assume that the

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Referring to the 20-point friendliness measure used in the first exercise of Chapter 1, assume that the mean score for all American college students is known to be 10, with a SD of 5 points.

a. Based on the data in Table 1.1, what is the z score for friendliness for the students sampled from Turck Hall? What are the one- and two-tailed p values for this sample?

b. If you were testing the null hypothesis (i.e., μ = 10), would you reject H0 for the students of Turck Hall at the .05 level for a one-tailed test? For a two-tailed test?


Table 1.1

Turck Hall (N = 15) 17 18 9. 6. 13 16 5 15 17 11 11 13 10 20 14 Kirk Hall (N = 15) 17 8 12 12 3 12 14 11 9. 8 6. 11 Dupr

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Introductory Statistics For The Behavioral Sciences

ISBN: 9780470907764

7th Edition

Authors: Joan Welkowitz, Barry H. Cohen, R. Brooke Lea

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