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A random variable X has the probability ...

A random variable X has the probability distribution:

For the events E = { X is a prime number } and `F = { X lt 4}`, the probability `P(E cup F)` is ………..

A

0.35

B

0.77

C

0.87

D

`0.50`

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The correct Answer is:
B
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KUMAR PRAKASHAN-PROBABILITY-Multiple Choice Questions (MCQs)
  1. In experiment probability that event A occurs in first trail is 0.4 th...

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  2. Probability distribution of random variable X is as follows : The...

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  3. A random variable X has the probability distribution: For the eve...

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  4. If a random variable X can take all non- negative integral values and ...

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  5. The mean and standard deviation of a random variable X are 10 and 5 re...

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  6. The probability distribution of a random variable X is given below : ...

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  7. Mean of the following probability distribution is …………

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  8. A fair dice is rolled 6 times. If "getting an even number" is a succes...

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  9. A fair dice is rolled 6 times. If "getting a prime number" is a "succe...

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  10. A bag consists of 10 balls each marked with one e digits 0 to 9. If fo...

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  11. Mean of the binomial distribution is 100 then it standard deviation li...

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  12. In a box there are 100 electric bulbs out of which 10 are defective. 5...

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  13. Mean and variance of one binomial distribution are (4)/(3) and (20)/(2...

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  14. Probability distribution of a discrete random variable X is given in t...

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  15. Mean and variance of binomial distribution are 3 and 2 respectively th...

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  16. The probability function of the binomial distribution is P(x)= ((6), (...

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  17. Let X be the random variable with following probability distribution. ...

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  18. The mean and standard deviation of a random variable X are given by E(...

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  19. Let X be a random variable with probability distribution. then E...

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  20. Two balanced dice are tossed 500 times. If sum of integers obtained o...

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