The article Increases in Steroid Binding Globulins Inducedby Tamoxifen in Patients with
Chapter 12, Problem 64(choose chapter or problem)
The article Increases in Steroid Binding Globulins Inducedby Tamoxifen in Patients with Carcinoma of the Breast (J.of Endocrinology, 1978: 219226) reports data on theeffects of the drug tamoxifen on change in the level of cortisol-binding globulin (CBG) of patients during treatment.With and , summary values are n 26,, and .a. Compute a 90% CI for the true correlation coefficient r.b. Test versus at level .05.c. In a regression analysis of y on x, what proportion ofvariation in change of cortisol-binding globulin levelcould be explained by variation in patient age within thesample?d. If you decide to perform a regression analysis with ageas the dependent variable, what proportion of variation inage is explainable by variation in CBG?
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