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A manager is interested in determining if the population standard deviation has dropped below 103. Based…
A manager is interested in determining if the population standard deviation has dropped below 103. Based on a sample of n = 17 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.10 significance level. The sample standard deviation is 75. 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, x2 >x2 = , reject Ho. Otherwise, do not reject Ho. O B. If the test statistic, x2 > x2/2 = , reject Ho or if the test statistic, x2 -1/2 , reject Ho. Otherwise, do not reject Ho. OC. If the test statistic, x2
Choose the correct conclusion below. O A. Reject Ho. There is sufficient evidence that the population standard deviation is less than 103. O B. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 103. O C. Reject Ho. There is insufficient evidence that the population standard deviation is less than 103. O D. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 103.
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