An electronics manufacturing process has a scheduled mean completion time of 70 minutes. It is claimed that, under new management, the mean completion time, µ, is less than 70 minutes. To test this claim, a random sample of 17 completion times under new management was taken. The sample had a mean completion time of 67 minutes and a standard deviation of 11 minutes. Assume that the population of completion times under new management is normally distributed. At the 0.05 level significance, can it be concluded that the mean completion time, µ, under new management is less than the scheduled mean? Perform a one-tailed test. Then fill in the table below. The null hypothesis: H0: ______ The alternative hypothesis: H1: ______ The type of test statistic: (choose one) ______ The value of the test statistic: _______ (Round to at least three decimal places.) The p-value: _____ (Round to at least three decimal places.) At the 0.05 level, can it be concluded that the mean completion time new management is less than the scheduled mean? Yes ______, NO _____
An electronics manufacturing process has a scheduled
The sample had a mean completion time of 67 minutes and a standard deviation of 11 minutes. Assume that the population of completion times under new management is
Perform a one-tailed test. Then fill in the table below.
The null hypothesis: H0: ______
The alternative hypothesis: H1: ______
The type of test statistic: (choose one) ______
The value of the test statistic: _______
(Round to at least three decimal places.)
The p-value: _____
(Round to at least three decimal places.)
At the 0.05 level, can it be concluded that the mean completion time new management is less than the scheduled mean? Yes ______, NO _____
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