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Linear Regression

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The following data relate the sales figures of the bar in Marty and Polly Starr's small bed-and-breakfast inn in Marathon, Florida, to the number of guests registered that week:

Week Guests Bar Sales
1 16 330
2 12 270
3 18 380
4 14 300

a) Perform a linear regression that relates bar sales to guests (not to time).
b) If the forecast is for 20 guests next week, what are the sales expected to be?

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The solution performs linear regression analysis.

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