Question

Colby is testing the effectiveness of a new allergy medication. There are one hundred people with allergies in the study. Sixty-two patients received the allergy medication and thirty-eight other patients did not receive treatment. Fifty of the patients who received the medication reported no allergies at the end of the study. Twenty of the patients who did not receive medication reported no allergies at the end of the study. What is the probability that a patient chosen at random from this study took the medication, given that they reported no allergies?
a. 65%
b. 63%
c. 78%
d. 71%

Answer 1

@Boblovesmath

Answer 2

@Xmoses1 @phi @wio

Answer 3

I don't know sorry :\
Today is not my day for math >.<