Question

Birth control pills have a theoretical annual efficacy of 99.5%, but a real-worls efficacy of only 95%. If a college student takes the pill for the four years she is in college, what is the probability that she will become pregnant at least once using the real world efficacy rate?
A. 0

B. 0.005

C. 0.020

D. 0.185

Answer 1

Answer: In my opinion B. 0.005 is the correct answer

Step-by-step explanation:

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