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A box contains 15 green and 10 yellow ...

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: (1)`4` (2) `6/(25)` (3) `(12)/5` (4) `6`

A

`6/25`

B

`12/5`

C

6

D

4

Text Solution

Verified by Experts

`P=15/25,q=10/25,n=10`
`sigma^(2)=npq=10.""3/5.2/5=12/5`
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