The table below shows the color and the model of cars purchased by 160 randomly selected customers at a car dealership in 2020. Model Color Тоyota 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 mode 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, x 2 , for red vehicle and the Toyota model

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The table below shows the color and the model of cars purchased by 160 randomly selected
customers at a car dealership in 2020.
Model
Color
Тoyota
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, x 2, for red vehicle and the Toyota model
Transcribed Image Text:8:57 A A • * 71%i Stats Question three.docx Not saved yet The table below shows the color and the model of cars purchased by 160 randomly selected customers at a car dealership in 2020. Model Color Тoyota 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, x 2, for red vehicle and the Toyota model
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