1. Statistics
2. Correlation and Regression Analysis
3. Regression Analysis
4. 411028

Please solve the exercise below:

Consider the following partial computer output for a multiple regression model.

Predictor Coefficient Standard Deviation

Constant 41.225 6.380
X1 1.081 1.353
X2 -18.404 4.547

Analysis of Variance

Source DF SS
Regression 2 2270.11
Error 26 3585.75

What is the number of observations in the sample?

Write the least squares regression (prediction) equation. Test the usefulness of variable x2 in the model at alpha =.05. Calculate the t statistic and state your conclusions.