The relationship of Outdoor temperature in degrees (X1) and the thickness of insulation in inches (X2) on monthly, electric heating costs in KWH (Y) is given by the regression equation Y' = 62.43 - 1.45 X1 - 0.52 X2. The Multiple Standard Error of the Estimate is 2.2 KWH. If a structure had 4 inches of insulation, and the temperature was 62 degrees what is the estimated KWH and what is the interval that would contain 95 percent of such estimates.