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An instructor has a question bank consis...

An instructor has a question bank consisting of 300 easy True / False questions, 200 difficult True / False questions, 500 easy multiple choice questions and 400 difficult multiple choice questions. If a question is selected at random from the question bank, what is the probability that it will be an easy question given that it is a multiple choice question?

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MODERN PUBLICATION-PROBABILITY-EXERCISE
  1. Assume that each born child is equally likely to be a boy or a girl. I...

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  2. Assume that each born child is equally likely to be a boy or a girl. I...

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  3. An instructor has a question bank consisting of 300 easy True / False ...

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  4. Given that the two numbers appearing on throwing two dice are differen...

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  5. Consider the experiment of throwing a die, if a multiple of 3 comes up...

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  6. If P(A) = 1/2, P(B) = 0, P(A//B) is :

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  7. If A and B are two events such that AcapBnephi, P((A)/(B))=P((B)/(A))...

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  8. If P(A)=3/5, P(B) = 1/5 find P (A cap B) if A and B are independent ev...

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  9. Two cards are drawn at random and without replacement from a pack of 5...

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  10. A box of oranges is inspected by examining three randomly selected ora...

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  11. A fair coin and an unbiased die are tossed. Let A be the event ‘head a...

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  12. A die marked 1, 2, 3 in red and 4, 5, 6 in green is tossed. Let A be t...

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  13. Let E and F be events with P(E)=3/5, P(F)=3/10 and P (E cap F)=1/5. Ar...

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  14. Given that the events A and B are such that P(A) = 1/2, P(AcupB)=3/5 a...

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  15. Let A and B be independent events with P(A) = 0.3 and P(B) = 0.4 Find:...

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  16. Let A and B be independent events with P(A) = 0.3 and P(B) = 0.4 Find:...

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  17. Let A and B be independent events with P(A) = 0.3 and P(B) = 0.4 Find:...

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  18. Let A and B be independent events with P(A) = 0.3 and P(B) = 0.4 Find:...

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  19. If A and B are two events such that : P(A)=1/4, P(B)=1/2 and P(AnnB)=1...

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  20. Events A and B are such that P(A)=1/2, P(B)=7/12 and P(not A or not B)...

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