Question 11 7.5 pts The systolic blood pressure of individuals is thought to be related to both age and weight. Let the systolic blood pressure, age, and weight be represented by the variables x1, x2, and x3, respectively. Suppose that Minitab was used to generate the following descriptive statistics, correlations, and regression analysis for a random sample of 15 individuals. Descriptive Statistics Variable Mean Median TrMean StDev SE Mean 15 159.35 159.65 159 35 3.401 0.878134 15 2.77 73.77 72.77 1.722 0.444618 15 185.90 185.20 185.90 4.266 1 101476 Variable Minimum Maximum Q3 126 173 140.497 166.049 45 89 47.721 78.484 129 24 140.492 222.010 Correlations (Pearson) 0.848 10 817 0.634 Regression Analysis The regression equation is x1 = 0.703 + 1 388x2 + 0.907x3 Predictor Coef StDev onstant 0.703 ).495 1 42 0.091 1 38 8 0.669 2.07 0 030 0.907 0.390 2 33 10.019 S = 0424 R-sq = 92 5% R-sq(adj) = 91.1% Test the coefficient of x2 in the regression equation to determine if it is zero or not zero. Use a level of significance of 5. Do you accept or reject the null hypothesis that the coefficient should equal zero? accept reject