SOLUTION: A consumer advocacy group wants to determine whether there is a (statistically significant) difference between the proportions of the two leading automobile models that need major

Question 806460: A consumer advocacy group wants to determine whether there is a (statistically significant) difference between the proportions of the two leading automobile models that need major repairs within 2 years of purchase. A major repair is defined as �more than $500.�
A sample of 500 owners of the Model A is contacted, and 65 owners indicated that their vehicles needed major repairs within 2 years. A sample of 600 owners of Model B is contacted, and 90 owners indicated that their vehicles needed major repairs within 2 years.
Test the null hypothesis that no difference exists between the proportions in populations A and B needing major repairs against the alternative hypothesis that a difference does exist. Use α = 0.10.

Answer by lou(1) (Show Source): You can put this solution on YOUR website!

A consumer advocacy group wants to determine whether there is a (statistically significant) difference between the proportions of the two leading automobile models that need major repairs within 2 years of purchase. A major repair is defined as �more than $500.�
A sample of 500 owners of the Model A is contacted, and 80 owners indicated that their vehicles needed major repairs within 2 years. A sample of 600 owners of Model B is contacted, and 108 owners indicated that their vehicles needed major repairs within 2 years.
Test the null hypothesis that no difference exists between the proportions in populations A and B needing major repairs against the alternative hypothesis that a difference does exist. Use α = 0.10.

RELATED QUESTIONS
Please show all work. Include formulas, calculations, or definitions necessary to solve (answered by mx34)

To answer the question as to whether or not there is a difference in time to... (answered by stanbon)

This is not in a textbook - Can you please help?? Let us assume that average gas... (answered by stanbon)

Is there a statistically significant difference between the two means? What if it... (answered by stanbon)

A study is designed to investigate whether there is a difference in response to various... (answered by jim_thompson5910)

A real estate agent wishes to determine whether tax assessors and real estate appraisers... (answered by math_tutor2020)

In 2004 the General social survey asked respondents to estimate how many hours and... (answered by stanbon)

A manufacturer claims that the mean amount of juice in its 16 ounce bottles is 16.1... (answered by ewatrrr)

Parametric and Nonparametric Data Identification Assignment Label each of the following... (answered by stanbon)