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The probability that an individual has​ 20-20 vision is 0.15 0.15. in a class of 49 49 ​students, what is the probability of finding five people with​ 20-20 vision?

Respuesta :

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Answer: This is a Binomial problem where, n=49, p=0.15 and x=5

Therefore,

P(x=5) = [tex] nCx P^{x} (1-p)^{n-x} [/tex]

=[tex] 49C5 (0.15)^{5} (1-0.15^{49-5} [/tex]

= 0.1135

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