Kostenloser Union Wahrscheinlichkeit Rechner

Berechnen Sie den probability of A or B unter Verwendung von the addition rule. Kostenloser union probability Rechner mit steps.

P(A or B)

0.700000

P(A or B) as %70.0000
P(Neither)0.300000

P(A or B) vs P(A)

Formel anzeigen →

Formel

## How to Calculate Union Probability ### Formula **P(A or B) = P(A) + P(B) - P(A and B)** The addition rule accounts for the overlap between events A and B. If you simply add P(A) and P(B), the intersection is counted twice, so you subtract P(A and B) once. For mutually exclusive events, P(A and B) = 0.

Lösungsbeispiel

P(A) = 0.3, P(B) = 0.5, P(A and B) = 0.1. Find P(A or B).

  1. 01P(A or B) = P(A) + P(B) - P(A and B)
  2. 02P(A or B) = 0.3 + 0.5 - 0.1
  3. 03P(A or B) = 0.7
  4. 04P(Neither) = 1 - 0.7 = 0.3