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A sample of size 60 is drawn from a population whose distribution is approximately normal. The mean and standard deviation of the selected sample is
A sample of size 60 is drawn from a population whose distribution is approximately normal. The mean and standard deviation of the selected sample is 150 and 5.5, respectively. Calculate a 99% confidence interval for . (148.11, 151.89) (148.81, 151.19) (148.58, 151.42) (189.96, 151.04)
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