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Each student in a sample of 10 was asked for the distance and the time required to commute to col

Question: 22 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.

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

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 b 1 show sufficient strength to conclude that β 1 is greater than zero at the α = 0.05 level?

d. Find the 98% confidence interval for the estimation of β 1. (Retain these answers for use in problem 13.24.)

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