QUESTION 4.

Refer to the following regression output: Predictor Coef SE Coof Constant 32.00 8 . 70 X1 -26.00 7.10 X2 21.00 4.70 X3 -16.00 9.30 Source DF SS MS F Regression 3.00 7, 200.00 Error 27.00 Total 30.00 10, 000.00 a. What is the regression equation? (Round the final answers to the nearest whole number. Negative answer should be indicated by a minus sign.) Y= X1+ X2 + X3 b. If X1 = 4, X2 = 6, and X3 = 8, what is the value of the dependent variable? (Round the final answer to the nearest whole. Negative answer should be indicated by a minus sign.) c-1. How large is the sample? Sample size c-2. How many independent variables are there? Quantity of independent variablesd. Complete the ANOVA table. (Round the final answers to 2 decimal places.) Source DF SS MS Regression 3 7, 200.00 Error 27 Total 30 10,000.00 e-1. Conduct a global test of hypothesis, using the 0.05 significance level. (Round the final answers to 2 decimal places.) Ho: B1 = B2 = B3 = 0 Hy: Not all B's are 0 Reject Ho if F> The value of the test statistic is e-2. Can you conclude that any of the regression coefficients are different from zero? Reject |HO. Not all regression coefficients equal zero. f-1. Conduct a test of hypothesis on each of the regression coefficients. (Round the final answers to 3 decimal places. Negative answer should be indicated by a minus sign.) For X1 For X2 For X3 Ho : B1 = 0 Ho: B2 = 0 Ho : B3 = 0 H1 : P1 = 0 H1 : B2 * 0 H1 : P3 * 0 Reject Ho if t> ort