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(answered) – 1) The depot is using a standard of 635 hours for a

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(answered) – 1) The depot is using a standard of 635 hours for aDescriptionSolution downloadThe Question1) The depot is using a standard of 635 hours for a particularmodification effort. You are to review the standard and determine whether itshould be revised. After sampling 20 of these modifications you calculate amean of 665 hours and a standard deviation of 45 hours. We are concerned thatthe hours might be higher or lower than the 635 hour standard. Test thestandard at the .05 level of significance. Select the correct answer out ofeach pair of choices. (Carry intermediate calculations to three decimalplaces.)The tp is 2.093The tp is 1.729The tc is 2.981The tc is 13.333We would reject the null hypothesisWe would fail to reject the null hypothesisWe would recommend using the existing standard.We would recommend revising the standard.

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