13. Do men and women differ on their attitudes toward drug laws? The GSS asks respondents to report whether they think marijuana should be legalized. The following table shows the frequencies, by gender, among black respondents. With an alpha level of .05, conduct a five-step chi-square hypothesis test to determine whether the two variables are independent.
14. The following table shows the support for marijuana legalization, by race, among male respondents. With an alpha level of .05, conduct a five-step chi-square hypothesis test to determine whether the two variables are independent.
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15. There is some concern that people of lower-income statuses are more likely to come in contact with the police as compared to higher-income individuals. The following table contains Police–Public Contact Survey (PPCS) data on income and police contacts among respondents who were 21 years of age or younger. With an alpha of .01, conduct a five-step hypothesis test
to determine if the variables are independent.