Mathematics, 12.07.2019 20:10 pennygillbert
Nbc news reported on may 2, 2013, that 1 in 20 children in the united states have a food allergy of some sort. consider selecting a random sample of 25 children and let x be the number in the sample who have a food allergy. then x ~ bin(25, 0.05).
Answers: 1
![P(X\geq4)=P(4)+P(5)+ . . . +P(25) \\ \\ =1-P(x\ \textless \ 4)=1-[P(0)+P(1)+P(2)+P(3)] \\ \\ =1-0.9659=\bold{0.0341}](/tpl/images/0082/1638/9bd53.png)
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