Need help with another problem .... If ANYONE would like to exchange email or im let me know, I really need help with this stuff!
If a coin flipped 6 times came up heads each time, what is the probability that on the seventh flip it will come up heads? With forumla too please.
And
If a pair of identical tiwns is born and the first baby is a girl, what is the probabilty that both babies are girls...
I know obviously it is a girl, but how do i express this ina forulma?
2006-11-02 04:53:55 · 2 answers · asked by Heather N 2 in Science & Mathematics ➔ Mathematics
since you are flipping a coin its always 50/50 no matter what, it makes no difference what the other flips are.
the second question is trivial as well P(both are girls) = 1
thats all you need to write, since there is a 100% chance of them being girls, by definition of what identical twins mean
2006-11-02 05:05:40 · answer #1 · answered by arik p 2 · 0⤊ 0⤋
The probability of getting heads is 50%, and tails is 50% - the previous tosses don't contribute to the probabilities of the current toss.
Identical twins!!! If they are identical, they both have to be the same gender!! Probability is 100%.
2006-11-02 04:58:35 · answer #2 · answered by WildOtter 5 · 0⤊ 0⤋