SOLUTION: In a population every tenth person has an IQ over 130. If we randomly select a team of 8 people
from this population what is the probability of having
a) no „smart” person on
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from this population what is the probability of having
a) no „smart” person on
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Question 1198630: In a population every tenth person has an IQ over 130. If we randomly select a team of 8 people
from this population what is the probability of having
a) no „smart” person on the team?
b) at least 2 „smart” people on the team? Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! Binomial Distribution; P[smart]= 1/10 = .1
n = 8
P(x=0) = binompdf(n, p, x-value) = binompdf( 8,.1,0) = .4305
P(x ≥ 2) = 1-P(x ≤ 1) = 1 - binomcdf(8, .1, 1)= 1- .8131 = .1869
