# When the regression model y=Bo

**Question description**

When the regression model y=Bo +B1x1+B2x2+B3x1^2+B4x2^2+B5x1x2+e is run and the following output is obtained, then

Annova df ss

regression 4 42657846

Residual 74 19413277

Total 79 62071123

a) the numerator and denominator degrees of freedom for the global usefulness test are

b) Find coefficient of determination R^2

c) Find the estimated error standard deviation s

We're ...... % confident that the true value of y would be approximatelyy within +/- ------

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