<< Chapter < Page | Chapter >> Page > |
If $A$ and $\mathrm{A\text{'}}$ are complements then $\mathrm{P(A)}+\text{P(A' )}=1$
FormulaIf $A$ and $B$ are mutually exclusive then $\text{P(A AND B)}=0$ ; so $\text{P(A OR B)}=\text{P(A)}+\text{P(B)}$ .
If $A$ and $B$ are NOT mutually exclusive then $\text{P(A OR B)}=\text{P(A)}+\text{P(B)}-\text{P(A AND B)}$
FormulaIf $A$ and $B$ are independent then:
Notification Switch
Would you like to follow the 'Elementary statistics' conversation and receive update notifications?