I don’t understand this Statistics question and need help to study.
- Use SAS to fit the 3 models. Write down the fitted models. For each model, determine the predicted cholesterol level for patient 4, and compare these predicted values with the observed value. Comment on your findings.
- For the model Y=, test whether at significance level 0.05. Specify your hypothesis, test statistics and its value, p-value and your conclusion.
- Construct the 95% CI for in the model Y=. What does this CI tell you about the existence of linearity relationship between Y and X1, controlling for X2?
- For the model Y=, test whether simultaneously at significance level 0.05. Specify your hypothesis, test statistics and its value, p-value and your conclusion.
