MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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The Consumer Reports Restaurant Customer Satisfaction Survey is based upon 148,599 visits to full-service restaurant chains.† One of the variables in the study is meal price, the average amount paid per person for dinner and drinks, minus the tip. Suppose a reporter for a local newspaper thought that it would be of interest to her readers to conduct a similar study for restaurants located in her city. The reporter selected a sample of 8 seafood restaurants, 8 Italian restaurants, and 8 steakhouses. The following data show the meal prices ($) obtained for the 24 restaurants sampled.
Italian | Seafood | Steakhouse |
---|---|---|
$13 | $16 | $25 |
14 | 18 | 19 |
16 | 18 | 23 |
18 | 25 | 25 |
17 | 24 | 20 |
21 | 16 | 22 |
18 | 19 | 28 |
11 | 24 | 30 |
Use ? = 0.05 to test whether there is a significant difference among the mean meal price for the three types of restaurants.
State the null and alternative hypotheses.
H0: ?Italian = ?Seafood = ?Steakhouse
Ha: ?Italian ≠ ?Seafood ≠ ?Steakhouse
Ha: ?Italian ≠ ?Seafood ≠ ?Steakhouse
H0: ?Italian ≠ ?Seafood ≠ ?Steakhouse
Ha: ?Italian = ?Seafood = ?Steakhouse
Ha: ?Italian = ?Seafood = ?Steakhouse
H0: Not all the population means are equal.
Ha: ?Italian = ?Seafood = ?Steakhouse
Ha: ?Italian = ?Seafood = ?Steakhouse
H0: ?Italian = ?Seafood = ?Steakhouse
Ha: Not all the population means are equal.
Ha: Not all the population means are equal.
H0: At least two of the population means are equal.
Ha: At least two of the population means are different.
Ha: At least two of the population means are different.
Find the value of the test statistic. (Round your answer to two decimal places.)
Find the p-value. (Round your answer to four decimal places.)
p-value =
What is your conclusion?
Reject H0. There is not sufficient evidence to conclude that the mean meal prices are not all the same for the three types of restaurants.
Do not reject H0. There is not sufficient evidence to conclude that the mean meal prices are not all the same for the three types of restaurants.
Do not reject H0. There is sufficient evidence to conclude that the mean meal prices are not all the same for the three types of restaurants.
Reject H0. There is sufficient evidence to conclude that the mean meal prices are not all the same for the three types of restaurants.
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