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A sample of 48 observations is selected from a normal population. The sample mean is 22, and the population standard deviation is 6. Conduct the...

2. A sample of 48 observations is selected from a normal population. The sample mean is 22, and the population standard deviation is 6. Conduct the following test of hypothesis using the .05 significance level.

H0 : μ ≤ 21
H1 : μ > 21

(a) Is this a one- or two-tailed test?



(b) What is the decision rule? (Round your answer to 2 decimal places.)

REJECT or DON'T REJECT (Choose one) H0 and REJECT or DON'T REJCT (Choose one) H1 when z > what?

(c) What is the value of the test statistic? (Round your answer to 2 decimal places.)

Value of the test statistic

(d) What is your decision regarding H0?

(Choose one) Reject or Do Not Reject

There is INSUFFICIENT or SUFFICIENT (Chose One) evidence to conclude that the population mean is greater than 21.

(e) What is the p-value? (Round your answer to 4 decimal places.)


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