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

Monjur Alahi

A box contains 15 green and 10 yellow balls. If 10 balls are randomly drawn, one-nyne, with replacement, then the variance of the number of green balls drawn is
A. `6/25`
B. `12/5`
C. 6
D. 4


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Salim Ahmed Kawsar

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

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