SOLUTION: 1) The depot is using a standard of 635 hours for a particular modification effort. You are to review the standard and determine whether it should be revised. After sampling 20 of
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Question 1079588: 1) The depot is using a standard of 635 hours for a particular modification effort. You are to review the standard and determine whether it should be revised. After sampling 20 of these modifications you calculate a mean of 665 hours and a standard deviation of 45 hours. We are concerned that the hours might be higher or lower than the 635 hour standard. Test the standard at the .05 level of significance. Select the correct answer out of each pair of choices. (Carry intermediate calculations to three decimal places.)
The tp is 2.093
The tp is 1.729
The tc is 2.981
The tc is 13.333
We would reject the null hypothesis
We would fail to reject the null hypothesis
We would recommend using the existing standard.
We would recommend revising the standard.
I think the answer is tp=2.093. TC=2.981. I would reject the null hypothesis and would recommend revising the standard? Is this correct? Answer by Boreal(15235) (Show Source):
