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8.2 Confidence Interval for Mean with Unknown (t-table) If n=n= 13, xx = 46, and s=s= 20, construct a confidence interval at a 80% confidence

8.2 Confidence Interval for Mean with Unknown (t-table) If n=n= 13, xx = 46, and s=s= 20, construct a confidence interval at a 80% confidence level. Assume the data came from a normally distributed population.

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