QUESTION 8

1. Highway gasoline mileage (dependent variable) and engine displacement (independent variable). Test for the significance of the regression. Use = 0.01. What is the p-value and what is your conclusion about the significance of the regression?

Engine	Displacement MPG
215	30.8
201	32.5
196	35.4
226	28.1
226	24.4
348	24.1
226	28.5
348	24.2
148	32.8
226	28
122	41.3
215	30
215	28.2
148	34.1
500	18.7
348	20.3
165	35.1
148	37.9
148	33.8
500	25.9
148	26.4

a.	The p-value = 0.00 and the regressionissignificant.
b.	The p-value = 0.00 and the regression isnotsignificant.
c.	The p-value = 0.05 and the regressionissignificant
d.	The p-value = 0.05 and the regression isnotsignificant.

QUESTION 9

1. What is the standard error for the slope? Round your answer to two significant digits.

QUESTION 10

1. What is thelower limitof a two-sided 95% confidence interval on theslope? Round your answer to two significant digits.

QUESTION 11

1. What is theupper limitof a two-sided 95% confidence interval on theintercept? Round your answer to four significant digits.

QUESTION 12

1. What is thelower limitof a two-sided 95% confidence interval on themeanhighway gasoline mileage when the engine displacement is x = 150 in³? Round your answer to four significant digits.