The Pap smear is the standard test for cervical cancer. The false-positive rate is 0.636; the false negative rate is 0.180. Family history and age are factors that must be considered when assigning the probability of cervical cancer. Suppose that after obtaining a medical history, a physician determines that the proportion of women who have cervical cancer is 2%. Determine and illustrate the effects a positive and a negative Pap smear test have on the probability that the patient has cervical cancer.