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 probabilty that on exactly one of these three occasions the voter approves of the mayor's work?
Could someone please explain this as easy as possible?
Thanks for your help. But I don't know what Binomial probability means.
But I could think of three cases
1st person 2nd person 3rd person
1 approve disapprove disapprove
2 disapprove approve disapprove
3 diapprove disapprove approve
Could you please help me a little more?