QuestionQ15: For $X \sim B(n, p)$ we have $\operatorname{Var}(X)=0.8 E(X)$. Find $p$

Studdy Solution
Solve the equation for $p$:
First, divide both sides by $np$ (assuming $np \neq 0$):
$1 - p = 0.8$
Subtract 0.8 from both sides:
$1 - 0.8 = p$
$p = 0.2$
The value of $p$ is:
$\boxed{0.2}$