You want to estimate the mean cost for repairing microwave ovens A random sample of...
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Calculus
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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