In the sample of 100 the is a 10% chance for each citizen that they areOriginally Posted by bombo31
in favour on increased aid, so the number in favour in the sample of 100
has a binomial distribution with single case probability of a favourable outcome
equal to .
For a sample of size N the mean number of successes is:
and the standard deviation is:
So now just plug and into
these equations to find the answerers.