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

Transcribed Image Text:

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 Dupre Hall (N = 10) 4 9. 11 6. 9. 10 4 Doty Hall (N = 5) 8 17 10 14