2. DETAILS ASWSBE14 9.E.057.MI. Need Help? Read It You may need to use the appropriate appendix table or technology to answer this question. A special industrial battery must have a life of at least 400 hours. A hypothesis test is to be conducted with a 0.02 level of significance. If the batteries from a particular production run have an actual mean use life of 387 hours, the production manager wants a sampling procedure that only 10% of the time would show erroneously that the batch is acceptable. What sample size is recommended for the hypothesis test? Use 30 hours as an estimate of the population standard deviation. (Round your answer up to the nearest integer.) Watch It F Master It

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