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A simple random sample of IQ scores is selected from a normally distributed population of statistics professors. The sample statistics are n=21, x=127, s=9. Determine

A simple random sample of IQ scores is selected from a normally distributed population of statistics professors. The sample statistics are n=21, x=127, s=9. Determine the critical value of t and the margin oferror, and then construct the95% confidence interval estimate for the population mean.

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