Question 1000341: The Census Bureau’s Current Population Survey shows that 28% of individuals, ages 25 and older, have completed four years of college. For a sample of 15 individuals, ages 25 and older, answer the following questions:
a. What is the probability four will have completed four years of college?
b. What is the probability three or more will have completed four years of college
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! The Census Bureau’s Current Population Survey shows that 28% of individuals, ages 25 and older, have completed four years of college. For a sample of 15 individuals, ages 25 and older, answer the following questions:
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Binomial Problem with n = 15 and p(completed college) = 0.28
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a. What is the probability four will have completed four years of college?
P(x = 4) = 15C4*0.28^4*0.72^11 = binompdf(15,0.28,4) = 0.2262
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b. What is the probability three or more will have completed four years of college?
P(3<= x <=15) = 1 - P(0<= x <=2) = 1 - binomcdf(15,0.28,2) = 0.8355
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Cheers,
Stan H.
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