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A)Consider a random variable ~(, 4) and a sample average, = 10, computed from a random sample of 25 observations of . What is a

A)Consider a random variable ~(, 4) and a sample average, = 10, computed from a random sample of 25 observations of . What is a 95% confidence interval for ?

B)Consider a random variable ~(20,4) and a sample average, computed from a random sample of 25 observations of . What is a 95% confidence interval for ?

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