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A class has 15 students whose ages are 1...

A class has 15 students whose ages are 14,17,15,14,21,17,19,20,16,18,20,17,16,19 and 20 years.One student is selected in such a manner that each has the same chance of being chosen and the age X of the selected student is recorded.What is the probability distribution of the random variable X?Find mean,variance and standard deviation of X.

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CHETANA PUBLICATION-PROBABILITY DISTRIBUTIONS-EXERCISE
  1. Two numbers are selected at random(without replacement) from the first...

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  2. Let X denote the sum of the numbers obtained when two fair dice are ro...

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  3. A class has 15 students whose ages are 14,17,15,14,21,17,19,20,16,18,2...

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  4. Identify the random variable as either discrete or continuous in each ...

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  5. The probability distribution of discrete r.v.X is as follows:- Find (...

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  6. The following is probability distribution of random variable X. Values...

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  7. The following is probability distribution of random variable X.determi...

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  8. The following is probability distribution of random variable X.Find th...

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  9. The pmf of r.v X is given by P(X=x)=(^5Cx)/(2^5),for x=0,1,2,3,4,5=0,o...

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  10. In the pmf of r.v.X.Find a and obtain cdf of X.

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  11. A fair coin is tossed 4 times.Let X denotes the number of heads obtain...

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  12. Find the probability distribution of the number of successes in two to...

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  13. A random variable X has the following probability distribution.Determi...

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  14. A random variable X has the following probability distribution. Dete...

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  15. The following is cdf of r.v.X.Find pmf of X and (i)P(1leXle2)

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  16. Find the expected value,variance and standard deviation of r.v.X whose...

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  17. Find the expected value,variance and standard deviation of r.v.X whose...

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  18. Find the expected value,variance and standard deviation of r.v.X whose...

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  19. Two cards are randomly frawn,with replacement,from a well shuffled dec...

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  20. The probability distribution of X as follows.Find (i)k

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