Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan's father and paternal grandfather were all
ergic to penicillin, Nathan had 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. What is the probability that Nathan is allergic to penicillin and the test predicts it?
A. 0.005
B. 0.015
C. 0.245
D.
0.735
You have to draw it so you can better process it. From there it's just the Pythagorean theorum. a²+b²=c² 6²+b²=10² (10 is c because it's the hypotenuse) 64+b²=100 100-64=36 √36 = 6