Tandomly Toni he pOp appropriate hypothesis test at a 0.05 significance level. The sample standard deviation is 91. Determine the null and alternative hypotheses. ОА. Но: о2 « 118 HA: 02 2 118 О В. Но: о2 2 13,924 HA: o2 < 13,924 OC. Ho: 02 = 118 HA: 02 118 O D. Ho: o2 < 13,924 Ha o2 2 13,924 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 > x12 reject H, or if the test statistic, x xa = reject Ho. Otherwise, do not reject Ho- Find the test statistic, . (Round to two decimal places as needed.) Choose the correct conclusion below. O A. Reject Ho. There is insufficient evidence that the population standard deviation is less than 118. B. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 118. C. Reject Ho. There is sufficient evidence that the population standard deviation is less than 118. D. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 118.

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Please make sure to do the rounding.

A manager is interested in determining if the population standard deviation has dropped below 118. Based on a sample of n = 17 items selected randomly from the population, conduct the
appropriate hypothesis test at a 0.05 significance level. The sample standard deviation is 91.
Determine the null and alternative hypotheses.
O A. Ho: o2 <118
На: о2 2 118
О В. На о2 2 13,924
HA: o2 < 13,924
ОС. Но о2 %3D118
HA: 02 118
O D. Ho: o2 < 13,924
HA: 02 2 13,924
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 > x12 =
reject H, or if the test statistic, x <x-g12 =
reject Ho. Otherwise, do not reject Ho
O B. If the test statistic, x < xÍ-a
reject Ho. Otherwise, do not reject Ho.
O C. If the test statistic, x > xa =
reject Ho. Otherwise, do not reject Ho-
Find the test statistic, x.
(Round to two decimal places as needed.)
Choose the correct conclusion below.
A. Reject Ho. There is insufficient evidence that the population standard deviation is less than 118.
O B. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 118.
OC. Reject Ho. There is sufficient evidence that the population standard deviation is less than 118.
D. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 118.
Transcribed Image Text:A manager is interested in determining if the population standard deviation has dropped below 118. Based on a sample of n = 17 items selected randomly from the population, conduct the appropriate hypothesis test at a 0.05 significance level. The sample standard deviation is 91. Determine the null and alternative hypotheses. O A. Ho: o2 <118 На: о2 2 118 О В. На о2 2 13,924 HA: o2 < 13,924 ОС. Но о2 %3D118 HA: 02 118 O D. Ho: o2 < 13,924 HA: 02 2 13,924 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 > x12 = reject H, or if the test statistic, x <x-g12 = reject Ho. Otherwise, do not reject Ho O B. If the test statistic, x < xÍ-a reject Ho. Otherwise, do not reject Ho. O C. If the test statistic, x > xa = reject Ho. Otherwise, do not reject Ho- Find the test statistic, x. (Round to two decimal places as needed.) Choose the correct conclusion below. A. Reject Ho. There is insufficient evidence that the population standard deviation is less than 118. O B. Do not reject Ho. There is insufficient evidence that the population standard deviation is less than 118. OC. Reject Ho. There is sufficient evidence that the population standard deviation is less than 118. D. Do not reject Ho. There is sufficient evidence that the population standard deviation is less than 118.
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