4. The text website has a data file (created from data at www . basketball-reference . com showing, for each game in 2010-2011 season of the National Basketball Association in which Rajon Rondo of the Boston Celtics played, x = the number of assists he recorded and y = whether the Celtics won (1=yes). Using SAS, or other software, (a) show that the logistic model fitted to these data gives logit { Pr(Y = 1 | x)} = -2.235 + 0.294r; (b) show that Pr(Y = 1 |x) increases from o.21 to 0.99 over the observed range of r from 3 to 24 and (c) construct a significance test an confidence interval about the effect in the conceptual population that these games represent