A certain HMO is attempting to show the benefits of managed care to an insurance company. The HMO believes that certain types of doctors are more cost-effective than others. One theory is that certification level is an important factor in measuring the cost-effectiveness of physicians. To investigate this, the HMO obtained independent random samples of 21 physicians from each of the three certification levels-Board certified (C); Uncertified, board eligible (E); and Uncertified, board ineligible (I)- and recorded the total per member per month charges for each (a total of 63 physicians). How many factors are present in this study?
A) 1
B) 3
C) 63
D) 21

Question

Quizplus · Accepted Answer

The study is investigating the effect of one factor, which is the certification level of the physicians, on the cost-effectiveness.

A Certain HMO Is Attempting to Show the Benefits of Managed