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Linear Regression

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A. Determine the regression equation.
b. Determine the estimated sales if 40 contacts are made.
X Y
14 24
12 14
20 28
16 30
46 80
23 30
48 90
50 85
55 120
50 110

c. Determine the standard error of estimate.
d. Suppose a large sample is selected (instead of just 10). About 95 percent of the predictions regarding sales would occur between what two values?

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