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Cardinals and Sales of Ted Drewes Frozen Custard

No trip to St. Louis is complete without seeing the Cardinals play and a post-game trip to Ted Drewes Frozen Custard. Ted believes the tie between Redbird fans and his frozen custard to be hopelessly inextricable; hence, he believes sales are higher during home games than road games. Ted's employees believe that the weather has a bigger impact on sales than anything else - particularly the air temperature: the higher the temperature, the more the sales. Facts were needed to trump opinion, so Ted and his employees gathered the following data:

a) Prepare a scatter plot of each independent variable vs. the dependent variable.
b) What is the regression equation that best represents the relationship between each independent variable and the dependent variable?
c) What is the regression equation that best represents the relationship between both independent variables and the dependent variable?
d) Who is correct - Ted or his employees? Adequately support your answer quantitatively.

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NOTE: ON DEPENDENT AND INDEPENDENT VARIABLES:
Customers per hour (Dependent variable)
Games (Independent variable)
Temperature (Independent variable)

Ted believes sales are higher during home games than road games.

First, the number of customers were summed up based on the venue of the game (Away and Home) and the result ...

Solution Summary

The solution empirically computes what causes the surge in sales of Ted Drewes Frozen Custard. It disproves Ted's idea that sales are higher during home games than road games. This conclusion was arrived using the attached statistical computations.

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