Researchers investigated whether insomnia is related to education status. Adults living in a certain region were selected to participate in the study using aâ random-digit telephone dialing procedure. In addition to insomnia statusâ (normal sleeper or chronicâ insomnia), the researchers classified each participant into one of four education categoriesâ (college graduate, someâcollege, high schoolâ graduate, and high schoolâ dropout). One dependent variable of interest to the researchers was a quantitative measure of daytime functioning called the Fatigue Severity Scaleâ (FSS). The data were analyzed as a 2Ã4 factorialâexperiment, with Insomnia status and Education level as the two factors. Required:
a. Determine the number of treatments for this study. List them.
b. How many treatments are there for thisâ study?