This figure shows an estimated linear equation with 95% prediction intervals. Assume that the units of  and  are dollars. (a) Visually estimate the intercept  and the slope . (b) Is se  less than 1,...

This figure shows an estimated linear equation with 95% prediction intervals. Assume that the units of
 and
 are dollars.

(a) Visually estimate the intercept
 and the slope
.

(b) Is se less than 1, about 1, or more than 1?

(c) Is
 approximately 0.3, 0.5, or 0.8?

(d) Estimate
, the standard deviation of the residuals.