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SusanAthena, Master's Degree
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2. Suppose we want to determine the (binomial) probability(p)

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2. Suppose we want to determine the (binomial) probability(p) of getting 5 heads in 11 flips of a 2-sided coin. Using the Binomial Probabilities Table in Appendix B of the text, what values of n, x and p would we use to look up this probability, and what would be the probability?
Submitted: 5 years ago.
Category: Math Homework
Expert:  SusanAthena replied 5 years ago.
Hi. Thank you for your question.

n = 11
x = 5
p = 0.5

And the probability is 0.22559

Kind regards,
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Customer: replied 5 years ago.
I need to show all of the steps.
Expert:  SusanAthena replied 5 years ago.
Hi. There really are no steps, because the question specifies to use table lookup.

n and x are given in the question. n is the number of flips, x is the number we're looking for the probability of getting that many heads.

And p is 0.5, because the chance of getting heads on any one flip is 0.5

Then you use that information to look up the probability in the table.