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A random sample of :2 measurements was selected from a population with unknown mean (.1. and standard deviation 0'. Calculate a 99% confidence interval for

A random sample of :2 measurements was selected from a population with unknown mean (.1. and standard deviation 0'. Calculate a 99% confidence interval for up for each of the following situations: (a) n=23, )_( =96.3, 3:2.48 ?Sus? (b) n=19,

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