Based on the information given for each of the following studies, decide whether to reject the null hypothesis. For each, give the Zscore 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 population are normally distributed.
Population
Study

U

O

Sample Score

p

Tail of Tests

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
