The consumer reports restaurant customer satisfaction survey is based upon 148,599 visits to full servuce restaurant chains. Assume the following data are representatives of the results reported. The variable type indicates the average amount amount paid per person for dinner and drinks, minus the tip. Score reflects diner's overall satisfaction, with higher values indicating greater overall satisfaction. A score of 80 can be interpreted as very satisfied.
| Restaurant |
Type |
Price ($) |
Score |
| Bertucci's |
Italian |
16 |
77 |
| Black Angus Steakhouse |
Seafood/Steakhouse |
24 |
79 |
| Bonefish Grill |
Seafood/Steakhouse |
26 |
85 |
| Bravo! Cucina Italiana |
Italian |
18 |
84 |
| Buca di Beppo |
Italian |
17 |
81 |
| Bugaboo Creek Steak House |
Seafood/Steakhouse |
18 |
77 |
| Carrabba's Italian Grill |
Italian |
23 |
86 |
| Charlie Brown's Steakhouse |
Seafood/Steakhouse |
17 |
75 |
| Il Fornaio |
Italian |
28 |
83 |
| Joe's Crab Shack |
Seafood/Steakhouse |
15 |
71 |
| Johnny Carino's Italian |
Italian |
17 |
81 |
| Lone Star Steakhouse & Saloon |
Seafood/Steakhouse |
17 |
76 |
| LongHorn Steakhouse |
Seafood/Steakhouse |
19 |
81 |
| Maggiano's Little Italy |
Italian |
22 |
83 |
| McGrath's Fish House |
Seafood/Steakhouse |
16 |
81 |
| Olive Garden |
Italian |
19 |
81 |
| Outback Steakhouse |
Seafood/Steakhouse |
20 |
80 |
| Red Lobster |
Seafood/Steakhouse |
18 |
78 |
| Romano's Macaroni Grill |
Italian |
18 |
82 |
| The Old Spaghetti Factory |
Italian |
12 |
79 |
| Uno Chicago Grill |
Italian |
16 |
76
|
Questions:
A) Develop the estimated regression equation to show how overall customer satisfaction is related to the independent variable average meal price.
B) At the 0.05 level of significance, test whether the estimated regression equation developed in part A) indicates a significant relationship between overall customer satisfactopn and average meal price.
C) Develop a dummy variable that will account for the type of restaurant ( Italian or seafood/steakhouse)
D) Develop the estimated regression equation to show how overall customer satisfaction is related to the average meal price and the type of of restaurant.
E) Is type of restaurant factor in overall customer satisfaction
F) Predict the Consumer Reports customer satisfaction score for a seafood/ steakhouse that has an average meal price of $20. How much would the predicted score have changed for an Italian restaurant ?