Question
A sample of 37 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 3. Conduct the
A sample of 37 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 3. Conduct the following test of hypothesis using the 0.02 significance level.
H0: 20
H1: > 20
a.Is this a one- or two-tailed test?
A) one tailed
B) two tailed
b.What is the decision rule?
A)RejectH0whenz> 2.054
B) RejectH0whenz 2.054
c.What is the value of the test statistic?(Round your answer to 2 decimal places.)
d.What is your decision regardingH0?
A) Fail to reject H0
B) Reject H0
e-1.What is thep-value?(Round your answer to 4 decimal places.)
e-2.Interpret thep-value?(Round your final answer to 2 decimal places.)
There is a ______ % chance of finding a z value this large by "sampling error" when H0 is true.
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