<PRE><B>Question 838700</B>
Thirty-five percent of households say they would feel secure if they had $50,000 in savings. You randomly select 8 households and ask them if they would feel secure if they had $50,000 in savings.
Binomial problem with n = 8 and p(secure) = 0.35
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Find the probability that the number that say they would feel secure is 
(a) exactly five = 8C5(0.35)^5*(0.65)^3 = binompdf(8,0.35,5) = 0.0808
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(b) more than five = 1 - binomcdf(8,0.35,4) = 0.1061 
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(c) at most five = binomcdf(8,0.35,5) = 0.9747
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Cheers,
Stan H.
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