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mohammadhosseinkarim
26.03.2020 •
Mathematics
At a highschool, 90% of the students take Physics and 35% of the students take both Physics and Statistics. What is the probability that a student that is taking Physics is also taking Statistics?
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Ответ:
38.89% probability that a student that is taking Physics is also taking Statistics
Step-by-step explanation:
We use the conditional probability formula to solve this question.
Suppose we have two events.
Event A and Event B.
The formula:
In which
P(B|A) is the probability of B happening, given that A has happened.
P(A) is the probability of A happening.
In this problem, we have that:
Event A: taking physics
Event B: taking statistics.
90% of the students take Physics
This means that![P(A) = 0.9](/tpl/images/0565/3895/da803.png)
35% of the students take both Physics and Statistics.
This means that![P(A \cap B) = 0.35](/tpl/images/0565/3895/1e988.png)
What is the probability that a student that is taking Physics is also taking Statistics?
38.89% probability that a student that is taking Physics is also taking Statistics
Ответ:
step 3 / C 2020
Step-by-step explanation:
i got it right on the quiz