When a random variable $X$ follows a binomial distribution $\mathrm { B } \left( 100 , \frac { 1 } { 5 } \right)$, what is the standard deviation of the random variable $3 X - 4$? [3 points] (1) 12 (2) 15 (3) 18 (4) 21 (5) 24
When a random variable $X$ follows a binomial distribution $\mathrm { B } \left( 100 , \frac { 1 } { 5 } \right)$, what is the standard deviation of the random variable $3 X - 4$? [3 points]\\
(1) 12\\
(2) 15\\
(3) 18\\
(4) 21\\
(5) 24