Pearsons correlation coefficient

Reference no: EM1318027

Write the letter of the response that best answers each problem.

x (lb hundreds)	26	35	29	39	20
y(mpg)	22.0	16.1	18.8	15.7	23.4

1. Does the weight of a vehicle affect the gas mileage? The following random sample was collected where x = weight of a vehicle in hundreds of pounds and y = miles per gallon.

(a) -0.941
(b) 0.941
(c) -0.970
(d) 0.970
(e) 0.965

2. If a vehicle weights 2200 pounds, what does the least-squares line predict for the miles per gallon?

(a) 22.7
(b) 66.0
(c) 42.4
(d) 22.0
(e) cannot determine

Reference no: EM1318027

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