A manufacturer of apple phone charges claims that only 4% of his production is defective. In a random sample of 120 items the defect rate is 4.99%. At the 1% level of significance. Test the managers claim. I) state the conclusion of the test.give a reason for your answer The table shows the color and model of cars below I) State the null and alternative hypothesis for this test. ii) calculate: •The expected frequency for red vehicle and the Toyota model •The chis-square contribution test statistic, x^2 for the red vehicle and the Toyota model.
A manufacturer of apple phone charges claims that only 4% of his production is defective. In a random sample of 120 items the defect rate is 4.99%. At the 1% level of significance. Test the managers claim. I) state the conclusion of the test.give a reason for your answer The table shows the color and model of cars below I) State the null and alternative hypothesis for this test. ii) calculate: •The expected frequency for red vehicle and the Toyota model •The chis-square contribution test statistic, x^2 for the red vehicle and the Toyota model.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Question
A manufacturer of apple phone charges claims that only 4% of his production is defective. In a random sample of 120 items the defect rate is 4.99%. At the 1% level of significance. Test the managers claim.
I) state the conclusion of the test.give a reason for your answer
The table shows the color and model of cars below
I) State the null and alternative hypothesis for this test.
ii) calculate:
•The expected frequency for red vehicle and the Toyota model
•The chis-square contribution test statistic, x^2 for the red vehicle and the Toyota model.
Transcribed Image Text:b) The table below shows the color and the model of cars purchased by 160 randomly
selected customers at a car dealership in 2020.
Model
Hyundai
19
Color
Toyota
17
Red
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.
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