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Unformatted text preview: This proportion, , remains constant throughout all events and is defined as the ratio 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