Relationship between a household income

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You believe there may be a relationship between a household's income and whether it possesses more than one car. You have conducted a survey of 100 families and you have discovered the following: 

Low income families with one car: 40 

Low income families with more than one car: 18 

High income families with one car: 12 

High income families with more than one car: 30 

a. State the null and alternate hypotheses in plain English sentences (not equations). 

b. What is the calculated chi-squared value?  Show your calculations. 

c. The tabled chi-squared value for 5% significance and one degree of freedom is 3.84. Can you reject the null hypothesis? Why or why not?

Reference no: EM131534731

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