Home
Class 12
MATHS
A box contains 15 green and 10 yellow ba...

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-by-one, with replacement, then the variance of the number of green balls drawn is

A

6

B

4

C

`(6)/(25)`

D

`(12)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

A box contains 15 green and 10 yellow balls.If 10 blace are randomly drawn,one-by-one,with replacement,then the variance of the number of green balls drawn is: (1)4(2)(6)/(25) (3) (12)/(5) (4) 6

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-by-one, with replacement, then the variance of number of yellow balls drawn is :

A box contains 4 red and 8 white balls. If 4 balls are drawn one by one with replacement then the probability of getting 3 white balls is

An urn contains 3 white and 6 red balls.Four balls are drawn one by one with replacement from the urn.Find the probability distribution of the number of red balls drawn.Also find mean and variance of the distribution.

A bag contains 7 green,4 white and 5 red balls.If four balls are drawn one by one with replacement,what is the probability that one is red?

Anumcontains 12 red balls and 12 green balls. Suppose two balls are drawn one after another without replacement,then the probability that the second ball drawn is green given that the first ball drawn is red is

A bag contains 4 green and 6 white balls. Two balls are drawn one by one without replacement. If the second ball drawn is white, what is the probability that the first ball drawn is also white ?

A box contains 1 black and 1 white ball. A ball is drawn randomly and replaced in the box with an additional ball of the same colour, then a second ball is drawn randomly from the box containing 3 balls. The probability that the first drawn ball was white given that at least one of the two balls drawn was white is

A bag contains 6 red balls and 10 green balls. 3 balls are drawn from it one by one randomly without replacement. If the third ball drawn is red, then the probability that first two balls are green is: