bank developed a model for predicting the average checking and savings account balance as balance=−18,438+317×age+1,240×years education+0.108×household wealth.   a. Explain how to interpret the numbers in this model. b. Suppose that a customer is 27 years​ old, is a college graduate​ (so that years education=16​), and has a household wealth of ​$130,000. What is the predicted bank​ balance?

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