FOM 7.3.2

Question 1

The LR is for negative is .76 answer the question

Answer 1

Roughly 40 percent

Question 2

The LR for positive is 3.8

Answer 2

Roughly 75%

Question 3

What determines the quality of an ROC curve?

Answer 3

The area under the curve. 1 equals a perfect test and 0.5 is basically worthless. This is an index of overall test performance