Question

1. The regression equation (i.e. least squares line) y = .97x + 31.85 describes the relationship between blood sugar levels (x) and cholesterol levels (y) for 8 different patients.

(a) For this problem, the correct interpretation of the slope is:

A) For each additional level of sugar, the cholesterol decreases by 31.85.

B) For each additional .97 levels of sugar, the cholesterol increases by 31.85.

C) For every additional level of cholesterol, the sugar level increases by .97.

D) For every additional level of sugar, the cholesterol level increases by .97.

E) None of the above.

(b) Based on this equation, a cholesterol level of 216 corresponds to what sugar level? (Round to the nearest whole number)

(c) Please interpret the y-intercept in the context of this problem. Be sure to include units!

Answer 1