The data below represent commute times (in minutes) and scores on a well-being survey x (Commute Time(min)) y(Well-Being Index score) 5 69.1 20 67.5 25 66.8 40 65.7 50 64.9 72 63.9 105 60.7 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. (round your answer to three decimals) b. Predict the well-being index of a person whose commute time is 30 minutes. (round your answer to one decimal)
The data below represent commute times (in minutes) and scores on a well-being
survey
x (Commute Time(min)) y(Well-Being Index score)
5 69.1
20 67.5
25 66.8
40 65.7
50 64.9
72 63.9
105 60.7
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. (round your answer to three decimals)
b. Predict the well-being index of a person whose commute time is 30 minutes. (round your
answer to one decimal)
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