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Find the mean number of heads in three t...

Find the mean number of heads in three tosses of a fair coin.

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`(3)/(2)`
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Determine the probability p, for each of the following events. (a) An odd number appears in a single toss of a fair die. (b) At least one head appears in two tosses of a fair coin. (c ) A king, 9 of hearts, or 3 of spades appears in drawing a single card from a well shuffled ordinary deck of 52 cards. The sum of 6 appears in a single toss of a pair of fair dice.

Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. What are possible values of X ?

A coin is tossed 19 times random variable X denotes the numbers of heads on it Then for ……….. value of r for P(X = r) is maximum.

Three coins are tossed together. If X denotes the numbers of heads obtain on it. Then obtain mean, variance and standard deviation of distribution.

Determine P(E|F) A coin is tossed three times, where E : head on third toss, F : heads on first two tosses

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KUMAR PRAKASHAN-PROBABILITY-EXERCISE -13.4
  1. State which of the following are not the probability distributions of ...

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  2. An urn contains 5 red and 2 black balls. Two balls are randomly drawn....

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  3. Let X represent the difference between the number of heads and the num...

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  4. Find the probability distribution of (i) number of heads in two tos...

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  5. Find the probability distribution of (i) number of heads in two tos...

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  6. Find the probability distribution of (i) number of heads in two tos...

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

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

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  9. From a lot of 30 bulbs which include 6 defectives, a sample of 4 bulbs...

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  10. A coin is biased so that the head is 3 times as likely to occur as tai...

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  11. A random variable X has the following probability distribution: ...

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

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  13. Find the mean number of heads in three tosses of a fair coin.

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  14. Two dice are thrown simultaneously. If X denotes the number of sixes, ...

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  15. Two numbers are selected at random (without replacement) from the firs...

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

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  17. A class has 15 students whose ages are 14, 17, 15, 14, 21, 17, 19, 20,...

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  18. In a meeting, 70% of the members favour and 30% oppose a certain propo...

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  19. Choose the correct answer The mean of the numbers obtained on throwi...

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  20. Choose the correct answer Suppose that two cards are drawn at random...

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