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WILL MARK AS BRAINLEST, PLEASE HURRY
Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were allergic 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


Sagot :

Answer: C. 0.245

Step-by-step explanation:

(100-75)%=25% chance of not having the same allergy

25% x 98% = 0.25 x 0.98 = 0.245