A manufacturer found that a significant relationship exists among the number of hours an assembly line employee works per shift x1, the total number of items produced x2, and the number of defective items produced y. The multiple regression equation is y’ = 9.6 + 2.2x1 - 1.08x2. Predict the number of defective items produced by an employee who has worked 9 hours and produced 24 items.
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