The data below represent commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below. Commute Time (minutes), x Well-Being Index Score, y 20 25 35 69.3 68.1 67.6 67.2 66.1 66.2 64.1 60 72 105 D Interpret the y-intercept. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. For a commute time of zero minutes, the index score is predicted to be (Round to three decimal places as needed.) O B. For every unit increase in commute time, the index score falls by (Round to three decimal places as needed.) on average. O C. For an index score of zero, the commute time is predicted to be (Round to three decimal places as needed.) minutes O D. For every unit increase in index score, the commute time falls by on average. (Round to three decimal places as needed.) O 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 (c) Predict the well-being index of a person whose commute time is 30 minutes The predicted index score is Click to select your answer(s)
The data below represent commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below. Commute Time (minutes), x Well-Being Index Score, y 20 25 35 69.3 68.1 67.6 67.2 66.1 66.2 64.1 60 72 105 D Interpret the y-intercept. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. For a commute time of zero minutes, the index score is predicted to be (Round to three decimal places as needed.) O B. For every unit increase in commute time, the index score falls by (Round to three decimal places as needed.) on average. O C. For an index score of zero, the commute time is predicted to be (Round to three decimal places as needed.) minutes O D. For every unit increase in index score, the commute time falls by on average. (Round to three decimal places as needed.) O 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 (c) Predict the well-being index of a person whose commute time is 30 minutes The predicted index score is Click to select your answer(s)
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Transcribed Image Text:The data below represent commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below.
Commute Time (minutes), x
Well-Being Index Score, y
20
25
35
69.3 68.1 67.6 67.2 66.1 66.2 64.1
Interpret the y-intercept. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
60
72
105 D
O A. For a commute time of zero minutes, the index score is predicted to be
(Round to three decimal places as needed.)
O B. For every unit increase in commute time, the index score falls by
(Round to three decimal places as needed.)
on average.
O C. For an index score of zero, the commute time is predicted to be
(Round to three decimal places as needed.)
minutes.
O D. For every unit increase in index score, the commute time falls by. on average.
(Round to three decimal places as needed.)
O 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.
(c) Predict the well-being index of a person whose commute time is 30 minutes.
The predicted index score is
Click to select your answer().
3:30 PM
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Transcribed Image Text:The data below represent commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below.
Commute Time (minutes), x
Well-Being Index Score, y
Question Help
20
25
35
69.3 68.1 67.6 67.2 66.1 66.2 64.1
60
72 105 O
(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 to three decimal places as needed.)
(b) Interpret the slope and y-intercept, if appropriate. Interpret the slope. Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
O A. For every unit increase in index score, the commute time falls by on average.
(Round to three decimal places as needed.)
O B. For a commute time of zero minutes, the index score is predicted to be
(Round to three decimal places as needed.)
O C. For every unit increase in commute time, the index score falls by on average.
(Round to three decimal places as needed.)
O D. For an index score of zero, the commute time is predicted to be minutes.
(Round to three decimal places as needed.)
Click to select your answer(s).
P Type here to search
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