SOLUTION: A poll shows that 70% of all voters approve of the mayor's work. On three separate occasions a pollster selects a voter at random. What is the probability that on exactly one of th
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-> SOLUTION: A poll shows that 70% of all voters approve of the mayor's work. On three separate occasions a pollster selects a voter at random. What is the probability that on exactly one of th
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Question 1195870: A poll shows that 70% of all voters approve of the mayor's work. On three separate occasions a pollster selects a voter at random. What is the probability that on exactly one of these three occasions the voter approves of the mayor's work?
The explanation on aops was not detailed enough for me, especially the part where it says
https://artofproblemsolving.com/wiki/index.php/2008_AMC_10B_Problems/Problem_17
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if given that % of all voters approve of the mayor's work, then % of all voters disapprove of the mayor's work
using binomial distribution formula
we find the number of ways only person approves () of the mayor multiplied by the probability person approves() and people disapprove ( )
the number of ways only person approves is (is given)
