An unfair coin with Pr[H]=23 is flipped. What is the probability of a tail? 3/3/2014 | Heather from Indianapolis, IN | 2 Answers | 0 Votes Mark favorite Subscribe Comment
Do you mean p = .23 for heads and if so then tails will come up at p = .77 Perhaps I do not understand your wording. 3/3/2014 | James G. Comment
Hi Heather, The probability of all possible outcomes must always sum to 1. I think in your question the pr(H)= 2/3 (since it cannot be greater than 1 it cannot be 23) which would mean the probability of a tail is 1 - pr(H)= 1-(2/3) = 1/3 Hope this helps! 3/3/2014 | Rachel W. Comment