A study reports data on the effects of the drug tamoxifen on change in the level of cortisol-binding globulin (CBG) of patients during treatment. With age = x and ACBG = y, summary values are n = 26,...

Extracted text: A study reports data on the effects of the drug tamoxifen on change in the level of cortisol-binding globulin (CBG) of patients during treatment. With age = x and ACBG = y, summary values are n = 26, Ex, = 1615, E(x, - x) = 3756.96, Ey, = 281.9, E(y, - v) = 465.34, and Exy, = 16,720. (a) Compute a 90% CI for the true correlation coefficient p. (Round your answers to four decimal places.) (b) Test H: p = -0.5 versus H: p < -0.5="" at="" level="" 0.05.="" calculate="" the="" test="" statistic="" and="" determine="" the="" p-value.="" (round="" your="" test="" statistic="" to="" two="" decimal="" places="" and="" your="" p-value="" to="" four="" decimal="" places.)="" z="P-value" =="" state="" the="" conclusion="" in="" the="" problem="" context.="" o="" reject="" ho.="" there="" is="" evidence="" that="" p="">< -0.5.="" o="" fail="" to="" reject="" ho:="" there="" is="" evidence="" that="" p="">< -0.5.="" o="" fail="" to="" reject="" h.="" there="" is="" no="" evidence="" that="" p="">< -0.5.="" o="" reject="" h..="" there="" is="" no="" evidence="" that="" p="">< -0.5.="" (c)="" in="" a="" regression="" analysis="" of="" y="" on="" x,="" what="" proportion="" of="" variation="" in="" change="" of="" cortisol-binding="" globulin="" level="" could="" be="" explained="" by="" variation="" in="" patient="" age="" within="" the="" sample?="" (round="" your="" answer="" to="" three="" decimal="" places.)="" (d)="" if="" you="" decide="" to="" perform="" a="" regression="" analysis="" with="" age="" as="" the="" dependent="" variable,="" what="" proportion="" of="" variation="" in="" age="" is="" explainable="" by="" variation="" in="" acbg?="" (round="" your="" answer="" to="" three="" decimal="">