Question

Arthur is testing the effectiveness of a new acne medication. There are 100 people with acne in the study. Forty patients received the acne medication, and 60 other patients did not receive treatment. Fifteen of the patients who received the medication reported clearer skin at the end of the study. Twenty of the patients who did not receive medication reported clearer skin 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 clearer skin?

Answer 1

@Callisto @ParthKohli

Answer 2

@abb0t @wio

Answer 3

15%

33%

38%

43%

Answer 4

i can't read all of this
how many people total reported clearer skin?

Answer 5

35 total. 15 given medication. 20 given a placebo.

Answer 6

35 total?

Answer 7

Yep.

Answer 8

of those 35 how many took the medication?

Answer 9

15

Answer 10

then it is \(\frac{15}{
35}\)

Answer 11

That's it? Alright.

Answer 12

that's it!

Answer 13

Thanks