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The student population of a large urban school is 60% poverty. If a team of 12 is randomly selected from the students in this school, what is the probability that precisely 7 students live in poverty?
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The student population of a large urban school is 60% poverty. If a team of 12 is randomly selected from the students in this school, what is the probability that precisely 7 students live in poverty?

User TrevorWiley
by
8.6k points

1 Answer

1 vote
Use the Binomial Distribution to work out the probability of exactly seven students out of twelve students live in poverty


nCr ×
(P success)^(r)×
(P fail)^(n-r)

12C7×
(0.6)^(7)×
(0.4)^(5) = 0.23 (rounded to 2 dp)
User Baz
by
8.3k points
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