MATLAB: An Introduction with Applications
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Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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| Restaurant | Type | Price ($) | Score |
|---|---|---|---|
| Bertucci's | Italian | 16 | 77 |
| Black Angus Steakhouse | Seafood/Steakhouse | 24 | 79 |
| Bonefish Grill | Seafood/Steakhouse | 26 | 85 |
| Bravo! Cucina Italiana | Italian | 18 | 84 |
| Buca di Beppo | Italian | 17 | 81 |
| Bugaboo Creek Steak House | Seafood/Steakhouse | 18 | 77 |
| Carrabba's Italian Grill | Italian | 23 | 86 |
| Charlie Brown's Steakhouse | Seafood/Steakhouse | 17 | 75 |
| Il Fornaio | Italian | 28 | 83 |
| Joe's Crab Shack | Seafood/Steakhouse | 15 | 71 |
| Johnny Carino's | Italian | 17 | 81 |
| Lone Star Steakhouse & Saloon | Seafood/Steakhouse | 17 | 76 |
| Longhorn Steakhouse | Seafood/Steakhouse | 19 | 81 |
| Maggiano's Little Italy | Italian | 22 | 83 |
| McGrath's Fish House | Seafood/Steakhouse | 16 | 81 |
| Olive Garden | Italian | 19 | 81 |
| Outback Steakhouse | Seafood/Steakhouse | 20 | 80 |
| Red Lobster | Seafood/Steakhouse | 18 | 78 |
| Romano's Macaroni Grill | Italian | 18 | 82 |
| The Old Spaghetti Factory | Italian | 12 | 79 |
| Uno Chicago Grill | Italian | 16 | 76 |
Transcribed Image Text:A statistical program is recommended.
The Consumer Reports Restaurant Customer Satisfaction Survey is based upon 148,599 visits to full-service restaurant chains.t Assume the following data are representative of the results reported. The
variable type indicates whether the restaurant is an Italian restaurant or a seafood/steakhouse. Price indicates the average amount paid per person for dinner and drinks, minus the tip. Score reflects
diners' overall satisfaction, with higher values indicating greater overall satisfaction. A score of 80 can be interpreted as very satisfied. (Let x, represent average meal price, x, represent type of
restaurant, and y represent overall customer satisfaction.)
Restaurant
Туре
Price ($)
Score
Transcribed Image Text:(d) Develop the estimated regression equation to show how overall customer satisfaction is related to the average meal price and the type of restaurant. (Use the dummy variable developed in part
(c). Round your numerical values to two decimal places.)
(e) Is type of restaurant a significant factor in overall customer satisfaction? (Use a =
0.05.)
State the null and alternative hypotheses.
O Ho: B2s0
Hg: Bz> 0
Ho: B
Ha: B2 > 0
= 0
O Ho: B2 2 0
Ha: B2 < 0
O Ho: B2 = 0
Hai B2
Find the value of the test statistic. (Round your answer to two decimal places.)
Find the p-value. (Round your answer to three decimal places.)
p-value
State your conclusion.
Reject Ho. There is insufficient evidence to conclude that the type of restaurant is a significant factor.
0'
Reject Ho. There is sufficient evidence to conclude that the type of restaurant is a significant factor.
Do not reject Ho: There is sufficient evidence to conclude that the type of restaurant is a significant factor.
Do not reject Ho. There is insufficient evidence to conclude that the type of restaurant is a significant factor.
(f) Predict the Consumer Reports customer satisfaction score for a seafood/steakhouse that has an average meal price of $15. (Round your answer to two decimal places.)
How much would the predicted score have changed for an Italian restaurant? (Round your answer to two decimal places.)
The predicted satisfaction score increases by
points for Italian restaurants.
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