A student housing and counseling service administrator wants to develop an alcohol abuse awareness program, so he collects data from 39 undergraduates about how many drinks they have in a week, their age in years, sex (0 = male, 1 = female), how many classes they are currently taking, and whether nor not they consider Thursday night to be the start of the weekend (0 = no, 1 = yes). The results of his regression on what affects how many drinks a student has in a week are as follows:

a. Indicate which, if any, of these variables is a significant predictor of students’ drinking behaviors.
b. Solve for how many drinks a student will have if she is a 19-year-old female who is taking 5 classes and does not think Thursday is the start of the weekend.
c. Interpret the regression coefficients for age and female.

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Constant Age Female Classes Thursday "weekend start" b SE 9.174 0.028 0.569 4.051 0.174 0.691 -1.536 0.387 4.523 0.791 t 2.265 0.159 0.823 -3.971 5.715 Sig. 0.030 0.875 0.417 0.001 0.001