Mathematics, 23.07.2020 17:01 jchidwic
In order to estimate the average electric usage per month, a sample of 196 houses was selected, and their electric usage determined. a) Assume a population standard deviation of 350 kilowatt hours. Determine the standard error of the mean. b) With a 0.95 probability, determine the margin of error. c) If the sample mean is 2,000 KWH, what is the 95% confidence interval estimate of the population mean
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In order to estimate the average electric usage per month, a sample of 196 houses was selected, and...
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