This data set is composed of incidence rates of Kaposi’s sarcoma in seventeen different regions of Tanzania. Reported in cases/million/year.   6.1, 6.3, 6.4, 6.6, 6.6, 7.2, 8.4, 8.5, 1.2, 1.6, 2.0, 2.3, 2.4, 2.6, 4.2, 4.2, 4.5 Calculate and interpret a 95% confidence interval. State the assumptions for a valid a 95% confidence interval.

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