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 in the table on p. 726.

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 1 is greater than zero at the 0.05 level?

d. Find the 98% confidence interval for the estimation of 1. (Retain these answers for use in Exercise 13.65 [p. 735].)

Transcribed Image Text:

Distance 1 3 5 5 7 7 8 10 10 12 Time 5 10 15 20 15 25 20 25 35 35