Home
Class 12
MATHS
Two bad eggs are mixed accidentally with...

Two bad eggs are mixed accidentally with `10` good ones. Three eggs are drawn at random without replacement from this lot . Find the mean and variance for the number of bad eggs .

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(2),(15)/(44)`
Promotional Banner

Topper's Solved these Questions

  • PROBABILITY

    BETTER CHOICE PUBLICATION|Exercise Assignment (Section VIII)|15 Videos

  • PROBABILITY

    BETTER CHOICE PUBLICATION|Exercise Previous year Board.s questions for practice ( Multiple choice question)|4 Videos

  • PROBABILITY

    BETTER CHOICE PUBLICATION|Exercise Assignment (Section VI)|11 Videos

  • MATRICES

    BETTER CHOICE PUBLICATION|Exercise Previous years Board Questions for practice |69 Videos

  • RELATIONS AND FUNCTIONS

    BETTER CHOICE PUBLICATION|Exercise PREVIOUS YEARS BOARD.S QUESTIONS FOR PRACTICE |43 Videos

Similar Questions

Explore conceptually related problems

A urn contains 4 white and 6 red balls. Four balls are drawn at random (without replacement) from the urn. Find the probability distribution of the number of white balls.

Two bad eggs are mixed accidently with 10 good ones. Find the probability distribution of the number of bad eggs in 3 eggs drawn at random in succession, without replacement fro a lot. Find the mean number of bad eggs drawn.

From a lot of 30 bulbs which includes 6 defectives, a sample of 4 bulbs is drawn at random with replacement. Find the mean and variance of the number of defective bulbs

Two cards are drawn one after the other from a well shuffled pack of 52 cards. Find the mean and variance of the number of red cards.

Two numbers are selected at random (without replacement) from the first six positive integers. Let X denote the larger of the two numbers obtained. Find E(X).

Two cards are drawn at random and without replacement from a pack of 52 playing cards. Find the probability that both the cards are red.

Two cards are drawn one by one without replacement from a well shuffled deck of 52 cards. Find the probability distribution of the number of spades.

There are 5 cards numbered 1 to 5, one number on one card. Two cards are drawn at random without replacement. Let X denote the sum of the numbers on the two cards drawn. Find the mean and variance of X.