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W 17. An Unhealthy Commute (Refer to Problem 25, Section 4.1.) The following data represent commute times (in minutes) and score on a well-being survey. Commute Time Gallup-Healthways Well-Being (minutes). .x Index Composite Score, y 69.2 683 67.5 67.1 66.4 66.1 630 Source The Gallop Organization (a) Find the least squares regression line treating the commute time, x, as the explanatory variable and the index score, v. as the response variable (b) Interpret the slope and y-intercept, if appropriate. (e) Predict the well-being index of a person whose commute is 30 minutes. (d) Suppose Barbara has a 20-minute commute and scores 673 on the survey. Is Barbara more "well-off" than the typical individual who has a 20-minute commute