You want to estimate the mean cost for repairing microwave ovens. A random sample of 87...
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You want to estimate the mean cost for repairing microwave ovens. A random sample of 87 microwave ovens gave a mean repair cost was $54.70 and a standard deviation of $10.50. Find the margin of error for a 99.5% confidence interval for estimating the mean repair cost for all microwave ovens. Report your answer accurate to one decimal place. E= Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places. You want to estimate the mean cost for repairing microwave ovens. A random sample of 87 microwave ovens gave a mean repair cost was $54.70 and a standard deviation of $10.50. Find the margin of error for a 99.5% confidence interval for estimating the mean repair cost for all microwave ovens. Report your answer accurate to one decimal place. E= Answer should be obtained without any preliminary rounding. However, the critical value may be rounded to 3 decimal places.
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