A random sample of n 15 items is taken, producing a sample mean of x 10with a sample variance of s 2 2 5 Assume x is normally distributed and construct a 90 confidence interval for the population mean

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Question: A random sample of n = 15 items is taken, producing a sample mean of x=10with a sample variance of s 2 =2.5. Assume x

A random sample of n = 15 items is taken, producing a sample mean of x=10with a sample variance of s²=2.5. Assume x is normally distributed and construct a 90% confidence interval for the population mean

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