Let D1, D2, , Db be the within block differences as defined in this section Assume that the Di 's are normal with mean D and variance 2D , for i 1, 2, , b Derive a formula for a 100(1 ) confidence interval for D Apply this formula to the data of Case Study 13 3 1 and construct a 95 confidence interval for the true average hemoglobin difference ( before walk after walk )

Question: Let D1, D2, . . . , Db be the within-block differences as defined in this section. Assume that the Di 's are normal with

Let D1, D2, . . . , Db be the within-block differences as defined in this section. Assume that the Di 's are normal with mean μD and variance σ2D , for i = 1, 2, . . . , b. Derive a formula for a 100(1 − α)% confidence interval for μD. Apply this formula to the data of Case Study 13.3.1 and construct a 95% confidence interval for the true average hemoglobin difference ("before walk" − "after walk").

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