ADVANCED TOPIC: Based on Table 12 from problem 23,

(a) write out the Zscore multiple regression formula for predicting average intragroup effect size at postassessment, and

(b) figure the predicted Z score for average intragroup effect size at postassessment for persons A through J, whose Z scores on each predictor variable are shown below.

Predictor Variable Person BDI Age No. of sessions Duration of disorder ABCDEFGH 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 1 1 - 1 1 1 1 J -1 -1 -1 -1