Given data: 2.31, 2.09, 2.36, 1.95, 1.98, 2.25, 2.16, 2.07,1.88, 1.94, 1.97, 2.028. Find a 95% two-sided CI on the mean. Historically, the mean number has been 1.95. Do you thinkthat is still true?

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