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Construct a 95 confidence interval estimate of the mean

In a study designed to test the effectiveness of acupuncture for treating migraine, 225 patients were randomly selected and treated with acupuncture. After one-month treatment, the number of migraine attacks for the group had a mean of 2 and standard deviation of 1.5. Construct a 95% confidence interval estimate of the mean number of migraine attacks for people treated with acupuncture.

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Basic Statistics: Construct a 95 confidence interval estimate of the mean

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