Estimate for the population mean
A 98% confidence interval estimate for the population mean was calculated to be (26.4, 47.8). Find out the mean of the sample, which was employed to find out the interval estimate (show all work)
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Suppose that a sample is drawn and z(?/2) = 1.96 and ? = 15. Answer the following questions: If the Maximum Error of Estimate is 0.04 for this sample, what would be the sample size?
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Referring back to (b), assume now that population mean waist size in 82 cm. Now what is the (approximate) probability that the sample mean will be at least 86.3 cm? In light of this computation, do you think that 82 cm is a reasonable value for &m
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