A community for students.
Here's the question you clicked on:
 0 viewing
marigirl
 one year ago
check my answer please:
When three fair coins are tossed, calculate the conditional probability that two heads and a tail turn up, given that first coin came up heads.
P(A) is that 2 heads and 1 tail
P(B) is 1 one is heads.
since we are considering that first one is going to be heads, then P(a) is 1 head and 1 tail?
so (1/4) / (1/2)
marigirl
 one year ago
check my answer please: When three fair coins are tossed, calculate the conditional probability that two heads and a tail turn up, given that first coin came up heads. P(A) is that 2 heads and 1 tail P(B) is 1 one is heads. since we are considering that first one is going to be heads, then P(a) is 1 head and 1 tail? so (1/4) / (1/2)

This Question is Closed

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1` given that first coin came up heads.` so we don't have to factor this in. We just need to consider the other two coins

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1P(second one is heads) = 1/2 P(third one is tails) = 1/2 P(second one is heads AND third one is tails) = P(second one is heads)*P(third one is tails) P(second one is heads AND third one is tails) = (1/2)*(1/2) P(second one is heads AND third one is tails) = 1/4

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0okay.. and if we do that means we are calculating the event happening twice which is not what we want .. yea?
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.