Nathan had an infection, and his doctors wanted him to take penicillin. Because nathans father and paternal grandfather were allergic to penicillin, nathan has a 75% chance of having the same allergy.the doctor performed a skin test to see whether nathan would react to it. The test is 98% accurate. If the test predicts that nathan is not allergic to penicillin, what is the probability after the test that nathan is not allergic to the drug