We study how does family size effect monthly expense on food. We collected a sample about family size and expense as follow: family size (x) : 6, 2, 4, 3, 5, 4 expense (y, in $1000): 3.2, 1.4, 2.5, 2.0, 3.6, 2.8 - 24, = 15.5 , x - 67.2. x-106, -43.25. %3D 1.(4) Find the estimated regression line. 2.(2) Predict the true mean expense for family size of 3. 3.(5) Complete the ANOVA table for this regression model, and do an F test for the model significance. a = 0.05. 4.(5) Conduct a t test Ho : B1 = 0, H1 : B1 +0 for the regression. Solve by reject region method. a = 0.05.