Problem 5 The manager of a department store wants to evaluate the relationship between the sales of air conditioners and

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Problem 5 The Manager Of A Department Store Wants To Evaluate The Relationship Between The Sales Of Air Conditioners And 1 (62.66 KiB) Viewed 43 times

Problem 5 The manager of a department store wants to evaluate the relationship between the sales of air conditioners and the average weekly temperature. The following weekly sales data along with the average daytime temperatures for 10 one-week periods are shown in the following table: Week 1 2 3 4 5 6 7 8 9 10 94 85 105 113 73 116 142 124 98 84 Air-Conditioner Sales (in units) Average Temperature (in degrees 77 72 87 92 74 95 100 98 85 79 Fahrenheit) Develop a linear regression equation for air conditioner sales as a function of the average weekly temperature. b. Forecast air conditioner sales if the average weekly temperature is 90 degrees Fahrenheit. c. Evaluate the "goodness of fit" of the regression equation by computing the values of R², r, and sand interpret the results.