Please confirm that I am doing this correctly:
What is the probability that a fair coin lands heads four times out of five flips?
I calculate this by doing the following:
Note that "5 choose 4" describes a binomial coefficient.
"5 choose 4"
which is 15.625%. Please confirm that this is correct. Thanks
YesOriginally Posted by jmedsy
Please confirm that I am doing this correctly:
What is the probability that a fair coin lands heads four times out of five flips?
I calculate this by doing the following:
Note that "5 choose 4" describes a binomial coefficient.
"5 choose 4"
which is 15.625%. Please confirm that this is correct. Thanks
=\left(\begin{array}{cc}5\\4\\\end{array}\ri ght)(0.5)^{4}(1-0.5)^{5-4}=0.15625)
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