The Ladies Professional Golfers Association (LPGA) maintains statistics on performanceand earnings for members of the LPGA Tour. Year-end performance statistics for the30 players who had the highest...

The Ladies Professional Golfers Association (LPGA) maintains statistics on performanceand earnings for members of the LPGA Tour. Year-end performance statistics for the30 players who had the highest total earnings in LPGA Tour events for 2005 appear in thefile named LPGA (LPGA website, 2006). Earnings ($1000s) is the total earnings in thousandsof dollars; Scoring Avg. is the average score for all events; Greens in Reg. is the percentageof time a player is able to hit the green in regulation; and Putting Avg. is the averagenumber of putts taken on greens hit in regulation. A green is considered hit in regulation ifany part of the ball is touching the putting surface and the difference between the value ofpar for the hole and the number of strokes taken to hit the green is at least 2.a. Develop an estimated regression equation that can be used to predict the average scorefor all events given the percentage of time a player is able to hit the green in regulationand the average number of putts taken on greens hit in regulation.b. Plot the standardized residuals against . Does the residual plot support the assumptionabout ? Explain.c. Check for any outliers. What are your conclusions?d. Are there any influential observations? Explain.