a random sample of 510 high school students has a normal distribution. The sample mean average ACT exam score was 21 with a 3.2 standard deviation. Construct a 99% confidence interval estimate of the population mean average ACT exam. Find the critical value
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Home » Mathematics » a random sample of 510 high school students has a normal distribution. The sample mean average ACT exam score was 21 with a 3.2 standard deviation. Construct a 99% confidence interval estimate of the population mean average ACT exam.