Choose the dependent variable (theresponse variableto be "explained") and the independent variable (thepredictororexplanatory variable).

(a-1)Dependent Variable

• City MPG ______
• Weight _______

(a-2)Independent Variable

City MPG _______

Weight ________

(b)Obtain the regression equation.(Negative values should be indicated by a minus sign. Round your answers to 4 decimal places.)

Y= _________X+ _________?

(c)Calculate R².(Round your answer to 4 decimal places.)

R² _________?

(d-1)Zero is contained in the 95% confidence interval.

Yes ____

No _____

(d-2)The slope is different from zero.

Yes _____

No_____

(e)Calculate the degrees of freedom and t-critical fora two-tailed t test for zero slope at = .05.(Round your answers to 2 decimal places.)

Degrees of freedom _______?

t -critical _________?

(f-1)Smallp-values tell us the null hypothesis is false.

• No ____
• Yes ____

(f-2)The sample provides significant evidence that the slope is negative.

No ____

Yes ____

Spread Sheet

Weight City MPG 3968 20 3583 22 3470 22 3527 23 3990 18 4724 17 3692 21 3315 22 3616 20 5527 14 3719 16 3097 26 3800 19 3532 25 2269 31 5674 15 3402 20 4029 19 3996 19 3242 23 2434 31 2575 29 2960 27 3618 15 4054 19 3192 24 3305 23 3605 19 4240 15 3933 18 3633 19 3790 17 3477 20 3258 21 4685 17 2776 25 2615 24 3186 21 5137 13 3461 21 4233 16 4178 18 4702 17 3713 22 5794 14 2306 28 3194 26 3428 22 4894 12 4751 17 2605 29 3296 25 5267 13 2789 25 3570 19 4011 18 2363 27 4398 15 2806 25 2127 36 2665 27 3419 24 3427 24 3280 25 5765 13 3465 24 2295 30 3038 22 3070 25 4711 17 3230 24 3528 21 4667 16