E 6 A social scientist is interested in determining if there

E #6:

A social scientist is interested in determining if there is a significant difference in the proportion of people who report working full time between two groups: those with a high school education or less (Group 1) and those with an associates\'s degree or higher (Group 2). Using data from the General Social Survey, the researcher obtains the following table: What are the lower and upper bounds for a 95% confidence interval for the difference in the proportion of each group who are working full time? Which of the following is the correct specification of the null and alternative hypothesis for testing whether there is a difference in the proportion of each group who are working full time at the 0.05 level of significance?

Solution