A large pizza chain has conducted a study to determine if the types of preferred pizza are independent of the region of the country where it is sold. One hundred random samples are selected in each region of the country with the following results. Areas Thin not Spicy Thin spicy Thick Crust not Spicy Thick Crust Spicy Total Samples Northeast 30 10 40 20 100 Northwest 25 20 45 10 100 Southwest 25 25 25 25 100 Southwest 15 30 10 45 100 Totals 95 85 120 100 400 Set up hypotheses to test if these preferred types of pizza are independent of the region of the country in which they are sold. Perform the appropriate statistical test to obtain your results. Calculate the p value and fully explain your results.
A large pizza chain has conducted a study to determine if the types of preferred pizza are independent of the region of the country where it is sold. One hundred random samples are selected in each region of the country with the following results. Areas Thin not Spicy Thin spicy Thick Crust not Spicy Thick Crust Spicy Total Samples Northeast 30 10 40 20 100 Northwest 25 20 45 10 100 Southwest 25 25 25 25 100 Southwest 15 30 10 45 100 Totals 95 85 120 100 400 Set up hypotheses to test if these preferred types of pizza are independent of the region of the country in which they are sold. Perform the appropriate statistical test to obtain your results. Calculate the p value and fully explain your results.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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Question
- A large pizza chain has conducted a study to determine if the types of preferred pizza are independent of the region of the country where it is sold. One hundred random samples are selected in each region of the country with the following results.
|
Areas |
Thin not Spicy |
Thin spicy |
Thick Crust not Spicy |
Thick Crust Spicy |
Total Samples |
|
Northeast |
30 |
10 |
40 |
20 |
100 |
|
Northwest |
25 |
20 |
45 |
10 |
100 |
|
Southwest |
25 |
25 |
25 |
25 |
100 |
|
Southwest |
15 |
30 |
10 |
45 |
100 |
|
Totals |
95 |
85 |
120 |
100 |
400 |
- Set up hypotheses to test if these preferred types of pizza are independent of the region of the country in which they are sold.
- Perform the appropriate statistical test to obtain your results.
- Calculate the p value and fully explain your results.
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