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Asked Feb 14, 2020

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Regression and Predictions. Exercises 13–28 use the same data sets as Exercises 13–28 in Section 10-1. In each case, find the regression equation, letting the first variable be the predictor (x) variable. Find the indicated predicted value by following the prediction procedure summarized in Figure 10-5 on page 493.

Tips Using the bill/tip data, find the best predicted tip amount for a dinner bill of $100. What tipping rule does the regression equation suggest?

Step 1

Given bill tip data. Let bill be x and tip be y. The following calculations are made to find the regression line.

The general regression line equation will be in form as shown below

The values of b0 b1 are calculated as shown below

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