Mathematics, 10.03.2020 23:01 siriuskitwilson9408
In order to estimate the average electric usage per month, a sample of
n = 81 houses was selected, and the electric usage was determined.
(a) Assume a population standard deviation of 450-kilowatt hours.
Determine the standard error of the mean. (b) With a probability of
0.95, what is the size of the margin of error? (c) If the sample mean is 1858-kilowatt hours, what is the 95% confidence interval estimate
of the population mean?
Answers: 1
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In order to estimate the average electric usage per month, a sample of
n = 81 houses was selec...
n = 81 houses was selec...
Mathematics, 07.03.2020 01:48