ck to Assignment Attempts 4. Exercise 4.4 Cascade Pharmaceuticals Company developed the following regression model, using time-series data from the past 33 quart nonprescription cold remedies: where Y = -1.04 +0.24X - 0.27X2 X Y = quarterly sales (in thousands of cases) of the cold remedy X Cascade's quarterly advertising (x $1,000) for the cold remedy competitors' advertising for similar products (x $10,000) Here is additional information concerning the regression model: Sbl = 0.032, Sb2 = 0.070, R = 0.640, se = 1.63, F-statistic = 31.402, and Durbin-Watson (d) statistic = 0.499. = Average / 3 = Which of the independent variables (if any) appears to be statistically significant (at the 0.05 level) in explaining sales of the c 2.042.) Check all that apply. to.05/2,33-3 = V