a drug trial is testing the effectiveness of two drugs If 30 patients are given Drug A, 10 patients are given Drug B, and 90 patients are given a placebo, what is the probability that a patient will NOT be given a placebo?

Question

a drug trial is testing the effectiveness of two drugs If 30 patients are given Drug A, 10 patients are given Drug B, and 90 patients are given a placebo, what is the probability that a patient will NOT be given a placebo?
A. 4/13***
B. 3/13
C. 9/13
D. 1/13

Anonymous2 · Accepted Answer

30 + 10 + 90 = 130 patients total 30 + 10 = 40 patients who ARE given a drug ------------ simplify 40/130 for your answer --------------- Yes, you are correct.

oof · Answer

okay, thank you.

Anonymous2 · Answer

Happy to help!

mira · Answer

A drug trial is testing the effectiveness of two drugs. If 50 patients are given Drug A, 20 patients are given Drug B, and 100 patients are given a placebo, what is the probability that a patient will NOT be given a placebo?