Hows your mileage? Weight (in tons) and fuel economy (in mpg) were measured for a sample of

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How’s your mileage? Weight (in tons) and fuel economy (in mpg) were measured for a sample of seven diesel trucks. The results are presented in the following table.image text in transcribed

a. Compute the least-squares regression line for predicting mileage (y)
from weight (x).

b. Construct a 95% confidence interval for the slope.

c. Test H0: β1 = 0 versus H1: β1

Can you conclude that weight is useful in predicting mileage? Use the α = 0.05 level of significance.

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Elementary Statistics

ISBN: 9781264136407

4th Edition

Authors: William Navidi , Barry Monk

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