MCQ
Given that $X \sim B(n, p)$. If $n=10, p=0.4$, then $E(X)=$_____
- A1
- B2
- C3
- ✓4
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| $X = x$ | -2 | -1 | 0 | 1 | 2 | 3 |
| P$(X = x$) | 0.1 | k | 0.2 | 2k | 0.3 | k |
For the following distribution function $F(X)$ of a r.v. $X$
| X | 1 | 2 | 3 | 4 | 5 | 6 |
| F(X) | 0.2 | 0.37 | 0.48 | 0.62 | 0.85 | 1 |
$P(3<X \leq 5)=$