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Unformatted text preview: • This proportion, , remains constant throughout all events and is defined as the ratio π of number of successes to number of trials. • The events are independent. • Given all the above, the binomial formula can be applied ( x = number of favorable outcomes; n = number of events): Example 1 A coin is flipped ten times. What is the probability of getting exactly five heads? Using the binomial formula, where n (the number of events) is given as 10; x (the number of favorable outcomes) is given as 5; and the probability of landing a head in one flip is 0.5: So, the probability of getting exactly five heads in ten flips is 0.246, or approximately 25 percent....
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- Fall '08
- Binomial Experiments, binomial variable