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Mnenie [13.5K]
3 years ago
7

Suppose you have data that shows that 12% of athletes test positive for steroids. You also know that 11% of athletes test positi

ve for steroids and actually use steroids. What is the probability that an athlete uses steroids, given that he tests positive?
Mathematics
2 answers:
Agata [3.3K]3 years ago
7 0

The probability that an athlete uses steroids, given that he tests positive is 0.92. I am hoping that this answer has satisfied your query and it will be able to help you, and if you would like, feel free to ask another question.

musickatia [10]3 years ago
4 0

Answer:  Probability that an athlete uses steroids given that he tests positive is 91.6%.

Step-by-step explanation:

Let A be the event that athletes test positive for steroids .

Let B be the event that he actually use steroids.

Since we have given that

Probability that athletes test positive for steroids = P(A) = 12%

Probability that athletes test positive for steroids and actually use steroids = P(A∩B) = 11%

So, we need to find the probability that an athletes use steroids given that he tests positive.

For this we will use "Conditional probability":

P(B\mid A)=\dfrac{P(A\cap B)}{P(A)}\\\\P(B\mid A)=\dfrac{11}{12}\\\\P(B\mid A)=0.916\\\\P(B\mid A)=0.916\times 100\%\\\\P(B\mid A)=91.6\%

Hence, Probability that an athlete uses steroids given that he tests positive is 91.6%.

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