krishnapatel5882 krishnapatel5882
  • 04-01-2021
  • Mathematics
contestada

What is the probability of getting exactly 2 heads when flipping three fair coins?

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LorenzoFernandez
LorenzoFernandez LorenzoFernandez
  • 04-01-2021

Answer:

t0he answer to this question is 1/4

Step-by-step explanation:

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emilyperez4467
emilyperez4467 emilyperez4467
  • 04-01-2021
This is called a binomial distribution, and the sizes of the events "got k heads out of n coin flips" are called binomial coefficients. Consider all the possible ways to get two heads, HHT,HTHandTHH. There are 2⋅2⋅2=8 possible combinations in total. Therefore, the answer is 3/8.
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