Each student in a sample of 10 was asked for the distance and the time required to commute to college yesterday.The data collected are shown here.
a. Draw a scatter diagram of these data.
b. Find the equation that describes the regression line for these data.
c. Does the value of b1 show sufficient strength to conclude that b1 is greater than zero at the a = 0.05 level?
d. Find the 98% confidence interval for the estimation of b1. (Retain these answers for use in Exercise 13. 71

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