A manager is interested in determining if the population standard deviation has dropped below 124. Based on a sample of

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A Manager Is Interested In Determining If The Population Standard Deviation Has Dropped Below 124 Based On A Sample Of 1 (72.62 KiB) Viewed 37 times

A manager is interested in determining if the population standard deviation has dropped below 124. Based on a sample of n = 26 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.05 significance level. The sample standard deviation is 124. Determine the null and alternative hypotheses. O A. Ho: 02 <15,376 HA: 02 > 15,376 *B. Ho: 02 > 15,376 HA: 02 < 15,376 OC. Ho G2 = 124 HA: 02 +124 XD. Ho: 02 <124 HA: 02 2124 State the decision rule. Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. (Round to four decimal places as needed.) O A. If the test statistic, x? >xX/2 reject Hy or if the test statistic, x? <x-a/2 = | reject Ho. Otherwise, do not reject Ho OB. If the test statistic, x2 >xa = reject Ho. Otherwise, do not reject Ho. OC. If the test statistic, x? <x*-a reject Ho. Otherwise, do not reject Ho -