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Suppose you obtain the following regression model, E[y]=22+85*x1 +98*x1*x2. What is the impact ofa 2unit change of x1 on the expected value of y when

Suppose you obtain the following regression model, E[y]=22+85*x1 +98*x1*x2. What is the impact ofa 2unit change of x1 on the expected value of y when x2 is at its mean of 89?

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