If we have a regression line predicting the amount of improvement in your performance as a function of the amount of tutoring you receive, an intercept of 12 would mean that
a. you need to have 12 hours of tutoring to get an A.
b. if you don't have any tutoring, the best you can do is a grade of 12.
c. even without tutoring you will improve.
d. tutoring helps.
Question 2
When the slope of the regression line is positive, the line goes from
a. upper left to lower right.
b. lower left to upper right.
c. the line is flat.
d. It depends on the intercept.
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