A Obtain a 95 prediction interval for the asking price
a. Obtain a 95% prediction interval for the asking price of a home of 5,000 square feet, based on the outlier- excluded data of ­Exercise 11.83. Would this be a wise prediction to make, based on the data?
b. Obtain a plot of the price against the size. Does the constant- variance assumption seem reasonable, or does variability increase as size increases?
c. What does your answer to part (b) say about the prediction interval obtained in part (a)?
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