Ranking driving performance of professional golfers.

Refer to The Sport Journal (Winter 2007) study of a new method for ranking the total driving performance of golfers on the Professional Golf Association (PGA) tour, presented in Exercise 11.29

(p. 628). You fit a straightline model relating driving accuracy (y) to driving distance (x). A MINITAB printout with prediction and confidence intervals for a driving distance of x = 300 yards is shown below.

a. Locate the 95% prediction interval for driving accuracy (y) on the printout, and give a practical interpretation of the result.

b. Locate the 95% prediction interval for mean driving accuracy (y) on the printout, and give a practical interpretation of the result.

c. If you are interested in knowing the average driving accuracy of all PGA golfers who have a driving distance of 300 yards, which of the intervals is relevant?
Explain.

Transcribed Image Text:

Predicted Values for New Observations New Obs Fit SE Fit 1 61.309 0.357 95% CI (60.586, 62.032) 95% PI (56.724, 65.894) Values of Predictors for New Observations New Obs 1 DISTANCE 300