Use the following information from a multiple regression analysis to complete parts?(a) through?(c)

Preview File Edit View Go Tools Window Help ! 3 64% Wed 11:17 AM Do Homework - Ekaterina Filippova HW 6 09/30.pdf (page 1 of 5) Q Search n =45 b1 =25 b2 =5 Sb, =10 Sb, = 10 E . .. Click here for page 1 of critical values of t. Click here for page 2 of critical values of t.2 a. Which variable has the largest slope, in units of a t statistic? O X2 O X b. Construct a 95% confidence interval estimate of the population slope, B1 . spys (Round to four decimal places as needed.) c. At the 0.05 level of significance, determine whether each independent variable makes a significant contribution to the regression model. On the basis of these results, indicate the independent variables to include in this model. Choose the correct hypotheses for X, below. OA. Ho: B1 = 0 OB. Ho: B1 # 0 H : P1 = 0 OC. Ho: By # 1 OD. Ho: B1 = 1 Hy : By = 1 Hy : By # 1 Find the test statistic. (Round to three decimal places as needed.) 12,245 6 SEP L 30 W SXPreview File Edit View Go Tools Window Help 1 8 64% Wed 11:17 AM Do Homework - Ekaterina Filippova HW 6 09/30.pdf (page 2 of 5) Q Search E . . . Is there evidence that the variable X, contributes to a model already containing X2? O Yes, since the null hypothesis is rejected. O No, since the null hypothesis is not rejected. O No, since the null hypothesis is rejected. O Yes, since the null hypothesis is not rejected. https://xlitemprod.pearsoncmg.com/api/v1/print/math 9/30/2020 Module 3-2-Ekaterina Filippova Choose the correct hypotheses for X2 below. O A. Ho: P2 # 1 OB. Ho: B2 # 0 Hy : B2 = 1 Hy : B2 = 0 O C. Ho: B2 = 0 OD. Ho: B2 = 1 H 1 : B 2 $ 0 Hy : B 2 # 1 Find the test statistic. (Round to three decimal places as needed.) 12,245 6 SEP 30 atv W SXPreview File Edit View Go Tools Window Help ! 3 64% Wed 11:18 AM Do Homework - Ekaterina Filippova HW 6 09/30.pdf (page 2 of 5) Q Search E . . . Is there evidence that the variable X2 contributes to a model already containing X1 ? O No, since the null hypothesis is rejected. O No, since the null hypothesis is not rejected. O Yes, since the null hypothesis is not rejected. O Yes, since the null hypothesis is rejected. On the basis of these results, indicate the independent variables to include in this model. Choose the correct answer below. O A. Include only the variable X2. O B. Include both variables X, and X2. O C. Include only the variable X1 . 1: Table of Critical Values of t (Page 1) Critical Values of t For a particular number of degrees of freedom, entry represents the critical value of t corresponding to the cumulative probability (1 - a) and a specified upper-tail area (a). 0 Cumulative Probabilities SEP 30 stv W S