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A sample of size 7-50 is drawn from a normal population whose standard deviation is...

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A sample of size 7-50 is drawn from a normal population whose standard deviation is a-7.1. The sample mean is x=48.52.(a) Construct a 99.9% confidence interval for H. Round the answer to at least two decimal places.A 99.9% confidence interval for the mean is 0

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