20. Revised mpg Ratings Using the listed old/new mpg ratings, find the best predicted new mpg rating for a car with an old rating of 30 mpg. Is there anything to suggest that the predic- tion is likely to be quite good? Old 16 27 17 33 28 24 18 22 20 29 21 New 15 24 15 29 25 22 16 20 18 26 19

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