A linear model was ft to predict weekly Sales of frozen pizza (in pounds) from t

Question

A linear model was ft to predict weekly Sales of frozen pizza (in pounds) from the average Price (S/unit) charged by a sample of stores in a city in 39 weeks over a ree-yoar period. The average Sales were 60.549 pounds (SD- 10,937 pounds), and the correlation between Price and Sales was -0.585. If the Price in a particular week was two SD lower than the mean Price, how much pizza would you predict was sold that week? The predicled sales would be pounds of pizza that week. Round to two decimal places as needed.)

Explanation / Answer

here corresponding z score for sales =r*zx =-0.585*(-2) =1.17

therefore projected sales =mean +z*std deviaiton =60549+1.17*10937=73345.29

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