Question 768182: A poll of 10 employees is taken in a small company to determine the number of employees that favor unionization. Suppose that 60% of employees prefer unionization. What is the probability that x equals 1? what is the probability that x is greater than 8? probability that x is greater than or equal to 5?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A poll of 10 employees is taken in a small company to determine the number of employees that favor unionization. Suppose that 60% of employees prefer unionization. What is the probability that x equals 1? what is the probability that x is greater than 8? probability that x is greater than or equal to 5?
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Binomial Problem with n = 10 and p(favor) = 0.6
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P(x = 1) = 10C1(0.6)*(0.4)^9 = binompdf(10,0.6,1) = 0.0016
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P(8<= x <=10) = 1- P(0<= x <=7) = 1 - binomcdf(10,0.6,7) = 0.1673
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P(5<= x <=10) = 1- P(0<= x <=4) = 1 - binomcdf(10,0.6,4) = 0.8338
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Cheers,
Stan H.
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