Kim and Sam are studying the outcomes of flipping a fair coin (equal probability flipping "heads" or "tails"). The coin is flipped 10 times and the number of "heads" is counted.     What is the expected number of heads? What is the standard deviation for the number of heads? What is the probability of exactly 5 heads? What is the probability of anything but 5 heads?

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section: Chapter Questions
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Kim and Sam are studying the outcomes of flipping a fair coin (equal probability flipping "heads" or "tails"). The coin is flipped 10 times and the number of "heads" is counted.  
 
What is the expected number of heads?
What is the standard deviation for the number of heads?
What is the probability of exactly 5 heads?
What is the probability of anything but 5 heads?
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