emathematics.net
Español
User (login-registrate)
 
Maths Exercices

Probability of independent and dependent events

The probability of two independent events A and B is the probability of A times the probability of B.


You flip two quartes. What is the probability that you flip two heads?

Use the formula for independent events.

p(A and B)
= p(A)·p(B)  
p(heads and heads)
= p(heads)·p(heads)
 
=

Substitute
 
=

Multiply

The probability that you flip two heads is