A coin is flipped 8 times. Find the probability of the event:

exactly 3 heads

Question

A coin is flipped 8 times. Find the probability of the event:





exactly 3 heads

anonymous · Answer

@mebs

anonymous · Answer

So your in data management right.

Do you know any standard distribution?... here's how you do these questions.

hero · Answer

(8 choose 3)(1/2)^3(1/2)^5

anonymous · Answer

the probability of heads is 1/2 and so is tails

so $$8C3(\frac{ 1 }{ 2 })^{3} (\frac{ 1 }{ 2 })^{5}$$

the three represents the heads the other five must be the tails.

akashdeepdeb · Answer

That would mean that if it rtossed thrice their can be 8 out comes (2^3)
 T T T
H H H
T T H
H T H
T H H
H H T
T H T
H T T
The probability of exactly 3 heads is =  1 possible out come/ 8 total outcomes = 1/8
Understood?

anonymous · Answer

dude you missed so many outcomes....

anonymous · Answer

the reason we just distribution patterns is not to do that kind of work.. though it is good to see it visually

hero · Answer

Actually, I agree with @mebs 

@AkashdeepDeb assumes the person flipped three coins 8 times, which is not the scenario the question is referring to.