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 guest registered that week:

QUESTION:

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:

(a) Perform a linear regression that related bar sales to guest (not to time).

(b) If the forecast is for 20 guests next week, what are the sales expected to be?


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