(a) Please identify the slope and interpret it in units.

(b) Would you accept or reject the null hypothesis that ?1 = 0 at 5% significance level?

(c) Based on the given data can you find a significance level under which you could not reject the null in part (b)

ELECTRIC.MTW Regression Analysis: USAGE versus SIZE Regression Equation USAGE =903 + 0.3559 SIZE Coefficients Term Coef SE CoefT-Value P-Value VIF Constant 903 132 6.83 0.000 SIZE 0.3559 0.0548 6.50 0.000 1.00 Model Summary S R-sq R-sq(adj) R-sq(pred) 155.251 76.46% 74.65% 67.48% Analysis of Variance Source DF Adj SS Adj MS F-Value P-Value Regression 1 1017803 1017803 42.23 0.000 SIZE 1 1017803 1017803 42.23 0.000 Error 13 313338 24103 Total 14 1331140