Managers at an automobile manufacturing plant would like to examine the mean completion time, 1of an assembly line opera

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Managers At An Automobile Manufacturing Plant Would Like To Examine The Mean Completion Time 1of An Assembly Line Opera 1 (49.62 KiB) Viewed 96 times

Managers at an automobile manufacturing plant would like to examine the mean completion time, 1of an assembly line operation. The past data indicate that the mean completion time is 42 minutes, but the managers have good reason to believe that this value has changed. The managers plan to perform a statistical test. After choosing a random sample of assembly line completion times, the managers compute the sample mean completion time to be 40 minutes. The standard deviation of the population of completion times can be assumed not to have changed from the previously reported value of 5 minutes, Based on this Information, complete the parts below. (a) What are the null hypothesis H, and the alternative hypothesis Hi that should be used for the test? HD 00 asa H0 OM X 5 (6) Suppose that the managers decide not to reject the nul hypothesis. What sort of error might they be making? (Choose one) Fill in the blanks to describe the Type II error that could occur the true mean completion time for the assembly line operation is 38 minutes A Type II error would be (Choose one) the hypothesis that his (Choose one) (Choose one) when, in fact, uis (Choose one)