# An allergist claims that 50% of the patients she tested are allergic to some type of weed. What is the probability that exactly 3 of her next 4 patients are allergic to weeds?

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What is he probability that none of her next 4 patients are allergic to weeds?

What is he probability that none of her next 4 patients are allergic to weeds?

##### 1 Answer

May 22, 2017

#### Explanation:

Since the allergist wants to know the probability of exactly