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MArishka [77]
3 years ago
5

10 multiple-choice questions, find the probability that the student gets exactly five correct.

SAT
1 answer:
Katyanochek1 [597]3 years ago
7 0
(Probability of getting 5 out of 10 question correct ) = 5/10
= 1/2
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Given the following parameters:  

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P(X =x)=nC_x p^x (1-p)^{n-x}\\P(X =3) = 5C_3 \ (0.6)^3 (1-0.6)^{5-3}\\P(X =3) = 5C_3 \ (0.6)^3 (0.4)^{2}\\P(X=3)=0.3456

Hence the probability that she gets <em>more than 3 heads</em> is 0.3456.

Learn more on binomial distribution here: brainly.com/question/20559010

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