11.22. A study analyzes relationships among y =

percentage vote for Democratic candidate, xi =

percentage of registered voters who are Democrats,andx2 = percentageofregistered voters who vote in the election, for several congressional elections in 2006. The researchers expect interaction, since they expect a higher slope between y and xi at larger values of X2 than at smaller values. They obtain the prediction equation y = 20 + 0.30xi +

0.05x2 + 0.005xiX2. Does this equation support the direction of their prediction? Explain.