<PRE><B>Question 711485</B>
Fifty 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 Problems with n = 8 and P(secure) = 1/2
------------------ 
Find the probability that the number that they say they would feel secure is (a) P(exactly five) = 8C5(1/2)^8 = 56/256
------------------------------------------------ 
(b) P(more than five) = 1 - binomcdf(8,1/2,4) = 0.3633
------------------------------------------------ 
(c) P(at most five) = binomcdf(8,1/2,5) = 0.8555
================================
Cheers,
Stan H.
================================
</PRE>