Answer the following questions using the data from Problem 14.47: a. Using = 0.05, test for
Question:
Answer the following questions using the data from Problem 14.47:
a. Using α = 0.05, test for the significance of the regression slope.
b. Construct a 95% confidence interval for the population slope.
c. What conclusions about engine size and MPG can be drawn from these results?
In Problem
Suppose the Environmental Protection Agency (EPA) would like to investigate the linear relationship between the engine size of sedans and the miles per gallon (MPG) they get. Data from the Excel file engine size. xlsx show the engine size in cubic liters and rated miles per gallon for a selection of sedans.
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