P(x≤3)

P(x>3 )

P(x≥3)

P(x=0)

P(x=0)

ليس أيا مما سبق

0.65

0.566

0.651

E(x)=3 ,V(x)=2

E(x)=2 ,V(x)=3

E(x)≠V(x)

$${\displaystyle P(x=0)=2e^{-<!--\; -\; -->2}}$$

$${\displaystyle P(x=0)=e^2}$$

$${\displaystyle P(x=0)=4e^2}$$

$${\displaystyle P(x=2)=e^{-<!--\; -\; -->2}}$$

$${\displaystyle P(x=2)=e^2}$$

$${\displaystyle P(x=2)=4e^2}$$

$${\displaystyle P(x\le 2)=2e^{-<!--\; -\; -->2}}$$

$${\displaystyle P(x\le 2)=e^{-<!--\; -\; -->2}}$$

$${\displaystyle P(x\le 2)=4e^2}$$