Question

there are 10000 students , 9000 of the students success in Buss stat and 8000 of...

there are 10000 students , 9000 of the students success in Buss stat and 8000 of students success in Math

a) Calculate the probability of success in one of the two courses
b) Calculate the probability of student success in both courses

Math   Statistics-And-Probability   
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Answer #1

Solution: Let A be the number of students who had success in Buss stat and B be the number of students who had success in Math.

Therefore, we have:

We know that total probability is 1, also the given events not mutually exclusive. Therefore, we have:

a) Calculate the probability of success in one of the two courses

Answer: We have to find the probability of success in one of the two courses.

Probability of success in one of the two courses

Therefore the probability of success in one of the two courses is 0.3

b) Calculate the probability of student success in both courses

Answer:

Probability of student success in both courses

  

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