A sample of 36 observations is selected from a normal population The sample mean is 21, and the population standard deviation is 5 Conduct the following test of hypothesis using the 05 significance level H0 20 H1 20 (a) Is this a one or two tailed test (b) What is the decision rule (c) What is the value of the test statistic (d) What is your decision regarding H0 (e) What is the p value Interpret it

Question: A sample of 36 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 5. Conduct the

A sample of 36 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 5. Conduct the following test of hypothesis using the .05 significance level.
H0: µ ≤20
H1: µ >20

(a) Is this a one- or two-tailed test?
(b) What is the decision rule?
(c) What is the value of the test statistic?
(d) What is your decision regarding H0?
(e) What is the p-value? Interpret it.

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