In the study by Malone and Kirkpatrick on brake light configurations and the incidence of rear end collisions, the independent variable(s) was/were
a. age, gender, and prior accident history
b. miles driven
c. number of rear end collisions
d. the type of light mounting
Question 2
What outcome is likely to occur for a hypothesis test evaluating a treatment that has a very large and robust effect?
a. a Type I error
b. a Type II error
c. correctly rejecting the null hypothesis
d. correctly failing to reject the null hypothesis