12) The regression equation Credits = 15.4 - .07 Work was fitted from a sample of 21 statistics students. Credits is the number of college credits taken and Work is the number of hours worked per week at an outside job.

Question

A) Interpret the slope.
B) Is the intercept meaningful? Explain.
C) Make a prediction of Credits when Work = 0 and when Work = 40.
What do these predictions tell you?

Answer 1

Substitute the values from C) into the equation and solve for each one to determine Credits.

Regression equation is predicted y = a + bx
...where a represents the y-intercept and b the slope.

I hope this will help get you started.