A woman is worried that she might have breast cancer. The standard test for ...

     A woman is worried that she might have breast cancer. The   standard test for breast cancer is mammography. From research she found   online, she discovers the sensitivity for the mammography screening is 89%   and the specificity is 96%. Her doctor has told her that one in 61 women in   her forties will have breast cancer.   Based on the   sensitivity, specificity, and prevalence, determine the positive predictive   value (PPV) for the mammography screening. Express your answer to three   decimal places.