A random variable X has the following probability distribution
Then the values of 'a' and P(0 < x < 5) respectively are |
$\frac{1}{81},\frac{8}{27}$ $\frac{1}{81},\frac{4}{9}$ $0,0$ $\frac{1}{9},\frac{4}{9}$ |
$\frac{1}{81},\frac{8}{27}$ |
The correct answer is Option (1) → $\frac{1}{81},\frac{8}{27}$ Given probability distribution $X:0,1,2,3,4,5,6,7,8$ $P(X):a,3a,5a,7a,9a,11a,13a,15a,17a$ Sum of probabilities equals $1$ $a(1+3+5+7+9+11+13+15+17)=1$ $1+3+5+7+9+11+13+15+17=81$ $81a=1$ $a=\frac{1}{81}$ The reqd probability $P(0<\text{ x }<5)$ corresponds to $X=1,2,3,4$ $P(0<\text{ x }<5)=3a+5a+7a+9a$ $=24a$ $=\frac{24}{81}=\frac{8}{27}$ The values of $a$ and $P(0 |