Question: Clarinex-D is a medication whose purpose is to reduce the symptoms associated with a variety of allergies. In clinical trials of Clarinex-D, 5% of the

Clarinex-D is a medication whose purpose is to reduce the symptoms associated with a variety of allergies. In clinical trials of Clarinex-D, 5% of the patients in the study experienced insomnia as a side effect. A random sample of 20 Clarinex-D users is obtained, and the number of patients who experienced insomnia is recorded.
(a) Find the probability that exactly 3 experienced insomnia as a side effect.
(b) Find the probability that 3 or fewer experienced insomnia as a side effect.
(c) Find the probability that between 1 and 4 patients inclusive, experienced insomnia as a side effect.
(d) Would it be unusual to ﬁnd 4 or more patients who experienced insomnia as a side effect? Why?

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a We can either use the binomial probability table or compute the probability by hand P X 3 20 C 3 0... View full answer

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