QNT /351-A sample of 30 observations is selected from
A sample of 30 observations is selected from a normal population. The sample mean is 21, and the population standard deviation is 6. Conduct the following test of hypothesis using the 0.05 significance level. H0 : ? ? 20H1 : ? > 20a.Is this a one- or two-tailed test?”Two-tailed”-the alternate hypothesis is different from direction.”One-tailed”-the alternate hypothesis is greater than direction.b.What is the decision rule? (Round your answer to 3 decimal places.) Reject or Do not reject?H0, when z >c.What is the value of the test statistic? (Round your answer to 2 decimal places.) Value of the test statisticd.What is your decision regarding H0?Do not rejectRejectThere is evidence to conclude that the population mean is greater than 20.e.What is the p-value? (Round your answer to 4 decimal places.) p-value
