An allergist claims that 50% of his patients suffer from some type of allergy. a) What is the probability that exactly 3 out of the next 4 patients will have any type of allergy? b) What is the probability that none of the next 4 patients will have any type of allergy?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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An allergist claims that 50% of his patients suffer from some type of allergy.

a) What is the probability that exactly 3 out of the next 4 patients will have any type of allergy?

b) What is the probability that none of the next 4 patients will have any type of allergy?

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