Mathematics, 26.11.2019 23:31 ayoismeisalex
In a random sample of 13 microwave ovens, the mean repair cost was $85.00 and the standard deviation was $15.30. using the standard normal distribution with the appropriate calculations for a standard deviation that is known, assume the population is normally distributed, find the margin of error and construct a 95% confidence interval for the population mean. a 95% confidence interval using the t-distribution was (75.8, 94.2 ). compare the results.
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