7. A simple random sample of men is obtained, and the elbow to fingertip length of each man is measured. The population of those lengths has a distribution that is normal. The sample statistics are n = 31, x = 14.7 inches, s = 0.9 inch. Use the t distribution to construct the confidence interval estimate of the population mean. See examples in section 10.1. Find the 95% confidence interval: inches < u < inches

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