?An Unhealthy Commute The following data represent commute times (in minutes) and a score on a well-being survey. Use the results from P
Chapter 14, Problem 11(choose chapter or problem)
An Unhealthy Commute The following data represent commute times (in minutes) and a score on a well-being survey.
Use the results from Problem 17 in Section 4.2 to answer the following questions:
(a) Treating commute time as the explanatory variable, x, determine the estimates of
0 and
1.
(b) Compute the standard error of the estimate, Se.
(c) Determine Sb1.
(d) A normal probability plot of the residuals indicates it is reasonable to conclude the residuals are normally distributed. Test whether a linear relation exists between commute time and well-being index composite score at the a = 0.05 level of significance.
(e) Construct a 95% confidence interval about the slope of the true least-squares regression line.
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