Question 1030099
 Forty dash five percent of households say they would feel secure if they had $50,000 in savings. You randomly select 8households and ask them if they would feel secure if they had $50,000 in savings. Find the probability that the number that say they would feel secure is (a) exactly five, (b) more than five, and (c) at most five.
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Binomial Problem with n = 8 and p = 0.45
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a) P(x = 5) = 8C5*0.45^5*0.55*3 = binompdf(8,0.45,5) = 0.1719
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c) P(x <= 5) = binomcdf(8,0.45,5) = 0.9115
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b) P(x > 5) = 1 - answer to "c" = 0.0885
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Cheers,
Stan H.
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