P3.39 (appendix) Interpretation of intercept, slope and R for regression analysis; Tableau: retailer For Donut Desire's North shop, the regression equation for the electricity cost (see Exhibit 3.12) was 3.12 given as follows (with rounding): LO 3.11 Estimated electricity cost for one month = 350 +0.0430X where X denotes the North shop's activity for one month. We assume the R for the regression equation is 0.8649. Required 1. From a cost behaviour perspective, explain the meaning of the intercept in the North shop's regression equation. 2. From a cost behaviour perspective, explain the meaning of the slope in the North shop's regression equation. 3. Refer to Exhibit 3.12. Where would the North shop's electricity cost rank among the five shops in a month in which each of the shops experienced a demand of 19000 units? 4. Explain the meaning of the R given for the North shop's regression equation.