A coin is flipped twice.What is the probability that both flips result in heads given that first ...
A coin is flipped twice.What is the probability that both flips result in heads given that first flip does?
Answer/Solution
1/2
Steps/Work
A=First flip lands heads.
B=Second flips is head.
P(b|a)=n(a intersection b)/n(a)
=P(h,h)/P[(h,h),(h,t)]
=1/2
Answer is option A
B=Second flips is head.
P(b|a)=n(a intersection b)/n(a)
=P(h,h)/P[(h,h),(h,t)]
=1/2
Answer is option A