BUSINESS: Slot Machine Revenues The following graph gives the revenues from slot and video...

BUSINESS: Slot Machine Revenues The following graph gives the revenues from slot and video poker machines at the Pequot Indians’ Mohegan Sun Casino in Connecticut for recent years. (Their accounting is done in fiscal years, running from July to the following June.)

a. Number the fiscal years (the bars) with x-values 1–6 (so that x stands for years since 2000–01) and use linear regression to fit a line to the data. State the regression formula. [Hint: See Example 8.]

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b. Interpret the slope of the line.

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c. Use the regression line to predict slot revenues at the casino in the fiscal year 2011–12.

Source: Connecticut Division of Special Revenue

Example 8 LINEAR REGRESSION USNG A GRAPHING CALCULATOR