13 May 14. Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For
14. Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For each, give (a) the Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected, (b) the Z score on the comparison distribution for the sample score, and (c) your conclusion. Assume that all populations are normally distributed.
(I) Population
Study Sample Score p Tails of Test
A 5 1 7 .05 1 (high predicted)
B 5 1 7 .05 2
C 5 1 7 .01 1 (high predicted)
D 5 1 7 .01 2
(II) Population
Study Sample Score p Tails of Test
A 100.0 10.0 80 .05 1 (low predicted)
B 100.0 20.0 80 .01 2
C 74.3 11.8 80 .01 2
D 16.9 1.2 80 .05 1 (low predicted)
E 88.1 12.7 80 .05 2
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