SOLUTION: suppose a coin is tossed three times. what is the probability getting 2 heads?
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Question 890716: suppose a coin is tossed three times. what is the probability getting 2 heads?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
There are 8 different outcomes:
HHH
TTT
HTT
THH
THT
HTH
TTH
HHT
----------------
The probability of getting any certain 1 of
these ( such as THT ) is:
----------------------------------
Looking at the list, there are 3
different ways to get 2 heads
( and obviously 1 tail )
THH
HTH
HHT
----------
The probability of getting ANY of these
outcomes is
---------------------
This is:
( THH ) OR ( HTH ) OR ( HHT ) which is:
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