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For the following probability distributi...

For the following probability distribution, determine standard deviation of the random variable X.

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The correct Answer is:
0.7
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ARIHANT PUBLICATION-PROBABILITY-CHAPTER PRACTICE (SHORT ANSWER TYPE QUESTIONS)
  1. Let A and B be the independent events with P(A)=0.3 and P(B)=0.4 find...

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  2. Let A and B be the independent events with P(A)=0.3 and P(B)=0.4 find...

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  3. A box contains 3 orange balls, 3 green balls and 2 blue balls. Three b...

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  4. In a group of students, there are 3 boys and 3 girls, 4 students are t...

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  5. P speaks truth in 70% of the cases and Q in 80% of the cases. In what ...

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  6. A bag contains 5 red, 7 green and 4 white balls. 3 balls are drawn one...

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  7. A bag contains 5 red, 7 green and 4 white balls. 3 balls are drawn one...

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  8. A and B appears for an interview for two posts. The probability of A's...

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  9. A and B appears for an interview for two posts. The probability of A's...

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  10. Two dice are tossed. Find whether the following two events A and B are...

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  11. A bag contains (2n+1) coins. It is known that n of these coins have a ...

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  12. A box contains 2 gold and 3 silver coins. Another box contains 3 gold ...

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  13. There are two bags, bag I and bag II. Bag I contains 2 white and 4 red...

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  14. Two cards are drawn successively with replacement from a well-shuffled...

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  15. Find the probability distribution of number of doublets in three tosse...

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  16. The random variable X has a probability distribution P(X) of the follo...

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  17. The random variable X has a probability distribution P(X) of the follo...

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  18. The random variable X can take only the values 0,1,2. If P(X=0)= P(X=1...

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  19. For the following probability distribution, determine standard deviati...

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  20. Find the probability of throwing almost 2 sixes in 6 throws of a singl...

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