Table 10.5 (page 509) gives data on the size in square feet of a random sample of houses sold in a Midwest city along with their selling prices.
hsize
Find the mean size of these houses and also their mean selling price . Give the equation of the least-squares regression line for predicting price from size, and use it to predict the selling price of a house of mean size. (You knew the answer, right?)
Jasmine and Woodie are selling a house whose size is equal to the mean of our sample. Give an interval that predicts the price they will receive with 95% confidence.