SOLUTION: Vermont State legislators would like to think that a majority of voters favor their proposed law. Assume that 50% of Vermont voters really do favor the law. a) find the probabi

Question 929404: Vermont State legislators would like to think that a majority of voters favor their proposed law. Assume that 50% of Vermont voters really do favor the law.
a) find the probability that in a sample of 40 voters, only 10 or fewer favor the law.
b) based on your answer from part a, would you think that a majority of voters really do favor the law?
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Claim: p(favor) = .50
Sample: p = .25
P( x < .25) = P(z < (.25-.50)/sqrt(.50*.50/40)) = P(z < -.25/sqrt(.50*.50/40))
P( x < .25) = P(z < -6.3246) = normalcdf(-100,-6.3246) = 1.269x10^(-10)
..........
do NOT think that a majority of voters really do favor the law
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