The contingency table below shows the results of a random sa

The contingency table below shows the results of a random sample of 200 registered voters that was conducted to see whether their opinions on a bill are related to their party affiliation. Test the claim of independence. A random sample of 100 employees from 5 different companies was randomly selected, and the number who take public transportation to work was recorded. The results are listed below. Perform a homogeneity of proportions test to test the claim that the proportion who take public transportation to work is the same in all 5 companies. Use alpha = 0.01. The data below show the age and favorite type of reading of 779 randomly selected people. 7) Test the claim that age and preferred reading type are independent. Use alpha = 0.05.

Solution

5)

critical value x²₀ = 9.488

chi-square test statistic x² = 8.030

fail to reject H₀

So there is not sufficient evidence to reject the claim of indepence