If a man (blood genotype IAi) and a women (blood genotype IBi) have children, which of the following are possible genotypes for their offspring? Select all that apply. IAIB IAi IBi i i

You build a model predicting blood pressure as a function of three variables: weight (numeric) age (numeric) income (categorical: low, medium, high) You first specify your model as: blood pressure ~ age * income + weight How many parameters (k) does your model have? (Remember, we do not count the grand mean in k)   You change the above model specification to be: blood pressure ~ age * income + weight * income How many parameters does your model have now?   You change your model to include the three-way interaction (which, remember, includes all two-way interactions and main effects, too!) Your model now looks like this: blood pressure ~ age * income * weight How many parameters does your model have now?

Approximately what percentage of people would have scores lower than an individual with a z-score of 1.65 in a normally distributed population? Approximately 95% 50% Approximately 5% Not possible to calculate (mean and standard deviation are not given)

In bivariate regression, the regression coefficient will be equal to rXY when: