SOLUTION: A political candidate estimates that 30% of the votes in his party favor his proposed tax reform bill. If there are 400 people at a rally, find the probability that at least 130 fa

Question 285603: A political candidate estimates that 30% of the votes in his party favor his proposed tax reform bill. If there are 400 people at a rally, find the probability that at least 130 favor his tax bill.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A political candidate estimates that 30% of the votes in his party favor his proposed tax reform bill. If there are 400 people at a rally, find the probability that at least 130 favor his tax bill.
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Binomial Problem:
n= 400 ; p = 0.3
P(130<= x <=400)
= 1- P(0<= x <=129)
= 1 - binomcdf(400,0.3,129)
= 0.1501
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Note: I used a TI calculator to find the result.
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Cheers,
Stan H.
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