Here’s the summary again:
| What it says | The fine print | |
|---|---|---|
 |
P(E1 OR E2) = P(E1) + P(E2) | the events must be mutually exclusive |
 |
P(E1 AND E2) = P(E1) * P(E2) | the events must be independent |
| What it says | The fine print | |
|---|---|---|
|
P(E1 OR E2) = P(E1) + P(E2) | the events must be mutually exclusive |
|
P(E1 AND E2) = P(E1) * P(E2) | the events must be independent |