Scenario: Return to the NHANES SRS data table. Select, include, and show only female respondents ages 18 and older.

a. Perform a regression analysis for adult women with BMI as Y and use waist circumference and height as the independent variables. Discuss the ways in which this model is or is not an improvement over a model that just uses waist circumference as a predictor.

b. If you can safely use this model, provide the 95% confidence interval for the slope and explain what it tells us about BMI for adult women.

c. Perform another regression analysis to predict BMI using waist circumference and wrist circumference as independent variables. Evaluate this model in comparison to the prior model. Report your findings.

d. Choose another variable that makes sense to you, and perform a third regression analysis. Evaluate this model in comparison to the prior models, and report what you find.