Questions 5 O A 6. 0 I7- 8 0 Chapter 11.MCRegression DataSetZ Q1 1 Question 7 of8 r (Requires StatTools) Run a series of multiple regressions of Y versus the X's as follows. Start with an equation that has all of the X's. Then if any X has a p- value greater than 0.05, run another regression without the variable that has the largest p-value. Keep running regressions, always deleting the variable with the largest p-value, until all of the remaining p-values are less than 0.05. Which of the following is true? Click here to reference the data needed to answer the question. O a. The final equation has a standard error of estimate greater than the standard error of estimate for the equation with all of the X's, but the difference is less than 0.025. O b. The final equation contains 6 ofthe 8 X's, and the two variables missing both have a correlation less than 0.10 (in magnitude) with Y. O c. The final equation has an R-square value greater than the R-square value for the equation with all ofthe X's, but the difference is only about 0.001. Q d. All of these choices are true