A survey of 35 randomly selected iphone owners showed that

A survey of 35 randomly selected "iPhone" owners showed that the purchase price has a mean of $432 with a sample standard deviation of $145.

a) Compute the standard error of the sample mean

b) Compute the 99% confidence interval for the mean.

c) How large a sample is needed to estimate the population mean within $14?

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A survey of 35 randomly selected iphone owners showed that : a survey of 35 randomly selected iphone owners showed that the purchase price has a mean of 432 with a sample standard

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