2a. Ka'Mil is a real estate broker who wants to know if there is a difference in the average annual household income between those who own their own homes and those who rent. She has measured household income on a ratio scale, based on the annual take-home pay of residents. What statistical test should she use to examine this difference?

Group of answer choices

Single sample t-test

Independent samples t-test

Chi square test of Association

Spearman Correlation

2b. Glenn noticed that he began drinking coffee more regularly since he began graduate school. Thinking that there may be a relationship between the amount of coffee consumed and level of education, he randomly stopped students in the Students Union toask them (a) whether or not they were graduate students or undergraduates and (b) howmany cups ofcoffee they normally drank in a week.What test should he use to determine: Do graduate students drink more coffee than undergraduate students?

Group of answer choices

Single sample t-test

Independent samples t-test

Dependent samples t-test

Chi square Goodness of Fit