the formula is lm(formula = S ~ X + E1 + E2 + M + E1M + E2M) in R code then the estimate is X 66.91518 E1 0.17211 E2 0.25801 M 0.10412 (intercept) 1.07705 Then which of the two is the correct regression expression? 1) S = 66.91518 + 0.17211 + 0.25801 … 2) S = 66.91518 + 0.17211 + 0.25801 … Or if both are wrong, how do I write the regression equation?

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