(a) Find the​ least-squares regression line treating the...

 (a) Find the​ least-squares regression line treating the commute​ time, x, as the explanatory variable and the index​ score, y, as the response variable.

y= x+ ()

​(Round to three decimal places as​ needed.)Part 2​

(b) Interpret the slope and​ y-intercept, if appropriate. Interpret the slope. Select the correct choice below​ and, if​ necessary

A. For a commute time of zero​ minutes, the index score is predicted to be enter your response here.(Round to three decimal places as​needed.)

B.For every unit increase in commute​ time, the index score

falls by ___________ on average. ​(Round to three decimal places as​ needed.

C.For every unit increase in index​ score, the commute time

falls by enter your response here​,

on average.​(Round to three decimal places as​ needed.)

D.For an index score of​ zero, the commute time is predicted to be

enter your response here

minutes.​(Round to three decimal places as​ needed.)

E.It is not appropriate to interpret the slope.

(Part 3)Interpret the​ y-intercept. Select the correct choice below​ and, if​ necessary, fill in the answer

A.For a commute time of zero​ minutes, the index score is predicted to be_______​(Round to three decimal places as​ needed.)

B.For every unit increase in commute​ time, the index score falls by

enter your response here​, on average. ​(Round to three decimal places as​ needed.)

C.For an index score of​ zero, the commute time is predicted to be

enter your response here minutes.

​(Round to three decimal places as​ needed.)

D.For every unit increase in index​ score, the commute time

falls by enter your response here​, on average.

​(Round to three decimal places as​ needed.)

E. It is not appropriate to interpret the​ y-intercept because a commute time of zero minutes does not make sense and the value of zero minutes is much smaller than those observed in the data set.

Part 4

​(c) Predict the​ well-being index of a person whose commute time is

30 minutes.The predicted index score is ______?

​(Round to one decimal place as​ needed.)

Part 5

​(d) Suppose Barbara has a 15​-minute commute and scores on the survey. Is Barbara more​ "well-off" than the typical individual who has a ​commute? Select the correct choice below and fill in the answer (Round to one decimal place as​ needed.)

A.No, Barbara is less​ well-off because the typical individual who has a 15​-minute commute scores enter your response here.

B. Yes, Barbara is more​ well-off because the typical individual who has a 15​-minute commute scores enter your response here