the question: which formula do i use to solve this? Do i use t= Mean (X1) - mean(X2)/ ?(s1)^21+(S2)^22 ? is the calculated value significant? and does the researcher reject the null?

17. A researcher predicted that students who live in dorms on campus have less nutritious diets than students who live off campus. The researcher selected 9 students who live in the dorms on campus and 9 students who live off campus. She had all students keep dietary records for ten days and have converted these records to a single number ("diet score"), with 0 representing total inadequate diet and 10 representing an ideal diet. Using the . data results below, answer the following questions. In Table T use the alpha level of 0.05 Students Living in a Dorm (X1) Students Living Off Campus (X2) Is the