1. A researcher is interested in the relationship between the number of hours of business courses completed in college by students (X) and their performance on the real estate licensing board test (Y). The actual hours completed by the students are available from their college transcripts, and the real estate board reports test scores. A regression of test performance on business courses provides the following results:

= 81 + 0.12X, r²= 0.35,S_y|x= 0.19s_b= .05,n= 68

Analyze these results for the researcher. What is the best estimate of the licensing board test score when a student with 40 hours of college business courses?

A. 81

B. 48

C. 81.12

D. 85.8