The cumulative distribution function $F(X)$ of a discrete random variable $X$ is given by the following table:
$X$ $1$ $2$ $3$ $4$ $5$ $6$ $F(X=x)$ $0.2$ $0.37$ $0.48$ $0.62$ $0.85$ $1$
Then $P[X=4] + P[X=5] = $
| $X$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ |
|---|---|---|---|---|---|---|
| $F(X=x)$ | $0.2$ | $0.37$ | $0.48$ | $0.62$ | $0.85$ | $1$ |
Then $P[X=4] + P[X=5] = $
- A$0.14$
- B$0.85$
- C$0.37$
- D$0.23$
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|---|---|---|---|---|---|
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