SOLUTION: A fair coin is tossed 7 times. What is the probability of obtaining exactly 4 heads?

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Question 481561: A fair coin is tossed 7 times. What is the probability of obtaining exactly 4 heads?
Answer by Edwin McCravy(20054)   (Show Source): You can put this solution on YOUR website!
A fair coin is tossed 7 times. What is the probability of obtaining exactly 4 heads?

Answer = 

or you can get it on a TI-83 or 84 by

binompdf(7,1/2,4) 
ENTER

You get binompdf( by pressing 2ND VARS scroll down to binompdf(  
then press ENTER

You'll get the same answer .2723275.

Edwin
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