SOLUTION: This is an extra credit question for my Honors Geometry Class-- I am in 8th grade If a coin is flipped 4 times, find P (exactly 3 heads). I do not know what my teacher is lo

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Question 155370: This is an extra credit question for my Honors Geometry Class-- I am in 8th grade
If a coin is flipped 4 times, find P (exactly 3 heads).
I do not know what my teacher is looking for- PLEASE HELP
THIS IS NOT A TEXTBOOK QUESTION!

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
If a coin is flipped 4 times, find P (exactly 3 heads).
-------------
Write down ALL of the possible results for flipping a coin 4 times;
there are 16 patterns.
--------
hhhh
--------
hhht
hhth
hthh
thhh
--------
tthh
thth
thht
htht
hhtt
htth
----
httt
thtt
ttht
ttth
------
tttt
=========
Note: that listing is called the "sample space" for the experiment
of tossing 4 coins as it lists all the possible results.
=========
Now count the number of coutcomes that have "exactly 3 heads".
=========
The probability of exactly 3 heads is the number of outcomes that
have 3 heads divided by the total number of possible outcomes.
==============================
Cheers,
Stan H.
==============================



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