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A technician compares repair costs for two types of microwave ovens (type I and type II)....

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Basic Math

A technician compares repair costs for two types of microwaveovens (type I and type II). He believes that the repair cost fortype I ovens is greater than the repair cost for type II ovens. Asample of 60 type I ovens has a mean repair cost of $76.43$, with astandard deviation of $17.12. A sample of 46 type II ovens has amean repair cost of $69.23, with a standard deviation of $19.14.Conduct a hypothesis test of the technician's claim at the 0.05level of significance. Let ?1 be the true mean repair cost for typeI ovens and ?2 be the true mean repair cost for type II ovens.

State the null and alternative hypotheses for the test.

Compute the value of the test statistic. Round your answer totwo decimal places.

Determine the decision rule for rejecting the null hypothesisH0H0. Round the numerical portion of your answer to three decimalplaces.

Make the decision for the hypothesis test.

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