The following sample data represent the number of late and on time flights for the Delta, United and US Airways. Excel File: data12-19.xlsx Flight Late US Airways 56 On Time 344 a. Formulate the hypotheses for a test that will determine whether the population proportion of late flights is the same for all three airlines. Ho All population proportions are equal H₂ Not all population proportions are equal v b. Conduct the hypothesis test with a 0.05 level of significance. What is the p-value? Use Table 3 of Appendix B. The p-value is greater than 0.10 What is your conclusion? Airline United 51 249 Delta 39 261 (to 2 decimals) (to 2 decimals) Unable to reject the null hypothesis that the population proportions are same c. Compute the sample proportion of late flights for each airline. P₁ = P₂ = P3 = (to 2 decimals) What is the overall proportion of late flights for the three airlines? Round your answer to three decimal places. The overall proportion of late flights for the three airlines is
The following sample data represent the number of late and on time flights for the Delta, United and US Airways. Excel File: data12-19.xlsx Flight Late US Airways 56 On Time 344 a. Formulate the hypotheses for a test that will determine whether the population proportion of late flights is the same for all three airlines. Ho All population proportions are equal H₂ Not all population proportions are equal v b. Conduct the hypothesis test with a 0.05 level of significance. What is the p-value? Use Table 3 of Appendix B. The p-value is greater than 0.10 What is your conclusion? Airline United 51 249 Delta 39 261 (to 2 decimals) (to 2 decimals) Unable to reject the null hypothesis that the population proportions are same c. Compute the sample proportion of late flights for each airline. P₁ = P₂ = P3 = (to 2 decimals) What is the overall proportion of late flights for the three airlines? Round your answer to three decimal places. The overall proportion of late flights for the three airlines is
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section11.4: Collecting Data
Problem 3E
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