Home
Class 12
MATHS
Find the mean number of heads in three t...

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

Text Solution

Verified by Experts

The correct Answer is:
`{:(X, 0, 1 ,2 ,3),(P(X),1//8,3//8,3//8,3//8):}`
`E(x) = 1.5`
Promotional Banner

Topper's Solved these Questions

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Part II PROBABILITY DISTRIBUTIONS (ACTIVITIES)|5 Videos

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MATHEMATICAL LOGIC |32 Videos

  • QUESTION BANK 2021

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise Part II PROBABILITY DISTRIBUTIONS (III. State whether each of the following is True or False.)|9 Videos

  • PROBABILITY DISTRIBUTION

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|9 Videos

  • THREE DIMENSIONAL GEOMETRY

    NAVNEET PUBLICATION - MAHARASHTRA BOARD|Exercise MULTIPLE CHOICE QUESTIONS|8 Videos

Similar Questions

Explore conceptually related problems

Determine variance and standard deviation of the number of heads in three tosses of a coin.

(a) (i) Find the probability distribution of the number of heads when three coins are tossed simultaneously. (ii) Find the probability distribution of the number of tails in the simultaneous tosses of three coins. (iii) Find the probability distribution of the number of heads in the simultaneous toss of four coins. (b) (i) Find the probability distribution of the number of heads in three tosses of a coin. (ii) Find the probability distribution of the number of sixes in two tosses of a die. ( c ) Find the probability distribution of the number of heads (tails) in four tosses of a coin.

Find the mean and variance of the number of heads in the two tosses of a coin.

Find the probability distribution for number of heads obtained in three tosses of a coin.

Find the expectation of the number of heads in 15 tosses of as coin.

Find the probability distribution of a) number of heads in two tosses of a coin, b) number of tails in three tosses of a coin.

The mean of the number of heads in two tosses of a coin is ___________.

Find the probability distribution of X ,the number of heads in two tosses of a coin ( or a simultaneous toss of two coins).

Find the probability distribution of (i) number of heads in two tosses of a coin.(ii) number of tails in the simultaneous tosses of three corns. (iii) number of heads in four tosses of a com.

NAVNEET PUBLICATION - MAHARASHTRA BOARD-QUESTION BANK 2021-Part II PROBABILITY DISTRIBUTIONS (Solve the following)
  1. Find the probability distribution of a) number of heads in two tosses ...

    Text Solution

    |

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

    Text Solution

    |

  3. Find the expected value and variance of X using the following p.m. f.

    Text Solution

    |

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

    Text Solution

    |

  5. Two dice are thrown simultaneously. If X denotes the number of sixe...

    Text Solution

    |

  6. A pair of dice is thrown 3 times. If getting a doublet is considered a...

    Text Solution

    |

  7. Given X~ B (n,P) If n= 10 and p=0.4 , find E(X) and Var (X) .

    Text Solution

    |

  8. If X has Poisson distribution with m=1, then find P(X le 1) given e^(-...

    Text Solution

    |

  9. If X has Poisson distribution with parameter m and P(X = 2) = P(X = 3)...

    Text Solution

    |

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

    Text Solution

    |

  11. The p. d. f. of a continuous r. v. Xis f(x) = {:((3x^2)/8 , 0 lt x l...

    Text Solution

    |

  12. If a r. v. X has p. d.f. f ( x ) = {:(c/x, 1 lt x lt 3"," c lt 0),(0, ...

    Text Solution

    |

  13. A die is thrown 6 times. If "getting an odd number" is a success, w...

    Text Solution

    |

  14. The probability that a bulb produced by a factory will fuse after 200 ...

    Text Solution

    |

  15. The number of complaints which a bank manager receives per day follows...

    Text Solution

    |

  16. Defects on plywood sheet occur at random with the average of one defec...

    Text Solution

    |

  17. It is known that, in a certain area of a large city, the average numbe...

    Text Solution

    |