The table below shows the color and the model of cars purchased by 160 randomly selected customers at a car dealership in 2020. Model colour toyota hyundai red 17 19 white 25 35 black 35 29 Use a 5 percent level of significance to test the null hypothesis that color chosen and car model are independent. i. State the null and alternative hypotheses for this test. ii. Calculate: a. the expected frequency for red vehicle and the Toyota model b. the chis-square contribution, ?2 for red vehicle and the Toyota model. i. Given that the chi-square test statistic, ?2, is 2.1183, find the p-value for test. ii. State the conclusion for the test. iii. State 2 limitations of the chi-square test, ?2

The table below shows the color and the model of cars purchased by 160 randomly selected customers at a car dealership in 2020. Model colour toyota hyundai red 17 19 white 25 35 black 35 29 Use a 5 percent level of significance to test the null hypothesis that color chosen and car model are independent. i. State the null and alternative hypotheses for this test. ii. Calculate: a. the expected frequency for red vehicle and the Toyota model b. the chis-square contribution, ?2 for red vehicle and the Toyota model. i. Given that the chi-square test statistic, ?2, is 2.1183, find the p-value for test. ii. State the conclusion for the test. iii. State 2 limitations of the chi-square test, ?2

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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