A ski resort asked a random sample of guests to rate their satisfaction on various attributes of their visit on a scale of 1–5 with 1 = very unsatisfied and 5 = very satisfied. The estimated regression model was Y = overall satisfaction score, X₁ = lift line wait, X₂ = amount of ski trail grooming, X₃ = safety patrol visibility, and X₄ = friendliness of guest services.

(a) Write the fitted regression equation.

(b) Interpret each coefficient.

(c) Would the intercept seem to have meaning in this regression?

(d) Make a prediction for Overall Satisfaction when a guest’s satisfaction in all four areas is rated a 5.

Predictor                                          Coefficient
Intercept....................................................2.8931
LiftWait......................................................0.1542
AmountGroomed.....................................0.2495
SkiPatrolVisibility......................................0.0539
FriendlinessHosts..................................−0.1196