The table below shows the color and the model of cars purchased by 160 randomly selected customers at a car dealership in 2020. 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. 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
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
The table below shows the color and the model of cars purchased by 160 randomly selected customers at a car dealership in 2020.
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
Transcribed Image Text:Model
Hyundai
19
Color
Toyota
Red
17
White
25
35
Black
35
29
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