At the NSW State elections, a pre-poll survey found that 50% of the electorate were
in favour of the sitting member, 40% were opposed and 10% were undecided.
If three people are selected at random, find (giving your answers as percentages to
the nearest whole number):
(i) the probability that all three are of the same opinion.
Would "undecided" count as an opinion? I know this is kind of trivial, especially since the answer, once it's rounded to the nearest percentage, is the same regardless of whether I count undecided or not. However, I was just curious as to whether you guys would count it as an opinion or not.
in favour of the sitting member, 40% were opposed and 10% were undecided.
If three people are selected at random, find (giving your answers as percentages to
the nearest whole number):
(i) the probability that all three are of the same opinion.
Would "undecided" count as an opinion? I know this is kind of trivial, especially since the answer, once it's rounded to the nearest percentage, is the same regardless of whether I count undecided or not. However, I was just curious as to whether you guys would count it as an opinion or not.
