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Q1) Based on information given for each of following studies, make a decision whether to reject null hypothesis. For each, provide Z-score cutoff (or cutoffs) on comparison distribution at which null hypothesis must be rejected, Z score on comparison distribution for sample score and your conclusion. Suppose 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
2
C
.01
D
Using the following data on 15 workers, construct an exact 95% confidence interval for µ.
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