Repairers claim-standard deviation

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Reference no: EM1311314

A microwave oven repairer says that the mean repair cost for damaged microwave oven is less than $100. You work for the repairer and want to test this claim. You find that a random sample of five microwave ovens has a mean repair cost of $75 and a standard deviation of $12.50. At α = 0.01, do you have enough evidence to support the repairer's claim?

Reference no: EM1311314

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