2000 Samples of 500 each taken from a population having .57 of it believing "yes".

2000 Samples of 500 each taken from a population having .60 of it believing "yes".

2000 Samples of 500 each taken from a population having .65 of it believing "yes".

3000 Samples of 500 each taken from a population having .32 of it believing "yes".