Question: Linear regression was used to develop the slope and intercept values for a forecast equation in Y (sales volume) and X (customer traffic) using the

Linear regression was used to develop the slope and intercept values for a forecast equation in Y (sales volume) and X (customer traffic) using the data below (sales in million dollars; customers in thousands). Forecast the sales volume when the customer level is 22. a = -0.158; b = 0.131.

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