Math Solutions

(All Steps) A consumer organization wants to develop a regression model to predict gasoline mileage (as measured by miles per gallon) based on the horsepower

Question: A consumer organization wants to develop a regression model to predict gasoline mileage (as measured by miles per gallon) based on the horsepower of the car's engine and the weight of the car in pounds. A sample of 15 recent car models was selected and the results are given below.

MPG Horsepower Weight
43.1 48 1985
19.9 110 3365
19.2 105 3535
17.7 165 3445
18.1 139 3205
20.3 103 2830
21.5 115 3245
16.9 155 4360
15.5 142 4054
18.5 150 3940
27.2 71 3190
41.5 76 2144
46.6 65 2110
23.7 100 2420
27.2 84 2490
  1. State the multiple regression equation.
  2. Interpret the meaning of the slopes b 1 and b 2 in this problem.
  3. Explain why the regression coefficient b 0 has no practical meaning in the context of this problem.
  4. Predict the mean miles per gallon for cars that have 100 horsepower and weigh 3,000 pounds.

Price: $2.99
Solution: The downloadable solution consists of 3 pages
Deliverable: Word Document


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