SOLUTION:
In the most recent election, 20% of all eligible college students voted. If a random sample of 10 students were surveyed,
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Question 1170601:
In the most recent election, 20% of all eligible college students voted. If a random sample of 10 students were surveyed,
a)Find the probability that exactly half of them voted in the election?
b)Find the probability that none of them voted in the election?
c)Find the probability that at least one of them voted in the election?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
for b, it is 0.8^10=0.1074
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for c probability at least 1 is 1- prob (0)=0.8926
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half of them is 10C5*0.2^5*0.8^5=0.0264 probability
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