Based on the information give for each of the following studies, decide whether to reject the null hypothesis, for each, give the Z- score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected, the Z score on the comparison distribution for the sample score, and your conclusion. Assume that all populations are normally distributed.
|
Study
|
N
|
S
|
Sample score
|
P tail of test
|
|
A
|
5
|
1
|
7
|
.051 (high predicted)
|
|
B
|
5
|
1
|
7
|
.052
|
|
C
|
5
|
1
|
7
|
.011 (high predicted)
|
|
D
|
5
|
1
|
7
|
.012
|