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effective in 90% of the cases in nistering this drug to five patients, r of them? Show the result of 3 5. Over a long period of time a certain drug has been which it has been prescribed. If a doctor is now admi what is the probability that it will be effective for fou probability calculations and circle one of the multiple choice answers. (6 points)
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Answer #1

Let X be the number of patients out of 5 patients on which the drug is effective. Then X ~ Binomial(n = 5, p = 0.9)

Probability that the drug is effective on four patients = P(X = 4)

= 5C4 * 0.94 * (1 - 0.9)5-4

= 5 * 0.94 * 0.1

= 0.32805

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