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QUESTION
If the mean is 6.5345, the standard deviation is 7.5066, and the sample size is 20, what is the 95% confidence interval?
If the mean is 6.5345, the standard deviation is 7.5066, and the sample size is 20, what is the 95% confidence interval? (assume that sigma is unknown). List each in proper (lower bound, upper bound) notation.
