The Incidence of Breast Cancer Varies Depending on a Woman's

Multiple Choice

The incidence of breast cancer varies depending on a woman's age. The National Cancer Institute gives the following probabilities for a randomly chosen woman in her 50s who takes a mammography to screen for breast cancer:
If a randomly chosen woman in her 50s taking the mammography screening test gets a positive test result, the probability that she indeed has breast cancer is the positive predicted value, PPV = P(Cancer | Positive test) . What is the PPV for this age group?

A) 0.03
B) 0.19
C) 0.50
D) 0.80