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) $\frac { 6 } { 25 }$ (2) 6 (3) 4 (4) $\frac { 12 } { 5 }$
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) $\frac { 6 } { 25 }$\\
(2) 6\\
(3) 4\\
(4) $\frac { 12 } { 5 }$