Independent Events (Leaving Cert Mathematics): Flashcards

📚Flashcards
Independent Events
Sign up to keep revising.Create a free account to study more flashcards and track your progress.

Practise the cards

10 cards from this deck

Show

Independent events (definition)

Events where one's occurrence doesn't affect the other

Formula: P(A and B)P(A \text{ and } B) when AA, BB independent

P(A)×P(B)P(A) \times P(B)

P(Heads and 4)P(\text{Heads and 4}) for coin flip and die roll

12×16=112\frac{1}{2} \times \frac{1}{6} = \frac{1}{12}

P(Heads)P(\text{Heads}) when flipping a coin

12\frac{1}{2}

P(4)P(4) when rolling a die

16\frac{1}{6}

Operation for P(A and B)P(A \text{ and } B) when independent

Multiplication

12×16\frac{1}{2} \times \frac{1}{6} equals

112\frac{1}{12}

Does coin flip affect die roll outcome?

No

When to multiply P(A)×P(B)P(A) \times P(B)

When events are independent

In independent events, one occurrence ___ the other

Does not affect

Join 100,000+ Leaving Cert students studying Flashcards with us.

Select your subjects, and get access to A+ resources today.