SOLUTION: A political candidate for state office using an old pro believes he has a 60% chance of being elected based on this old pool but to be sure he wants to conduct the new pole with a

Question 1107499: A political candidate for state office using an old pro believes he has a 60% chance of being elected based on this old pool but to be sure he wants to conduct the new pole with a margin of error of 3% how many people at a minimal need to be simple to achieve this 3% margin of error with 90% confidence
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
error=z*sqrt(p*(1-p))/n
0.03=1.645*sqrt(.6*.4/n)
square everything
0.0009=2.706*.24/n
n=721.6 or 722

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