Find regression equation to forecast number of rvs


A firm needs to develop a sales forecast for next year for its RV sales. It believes that its annual sales are related to the sales of its industry. It has prepared these historical data:

Industry Sales (in $Millions) Firm's Annual Sales (# of RVs)
536 98
791 137
650 112
813 145
702 120
575 103
684 116

a. What is the regression equation to forecast the number of RVs?

b. If estimates of industry sales next year are &725 million, forecast next year's RV sales.

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