Question

Please Please Help Me!!!!!!!!
2.Casey performs a survey to determine what movie-goers think about movie theater popcorn. Which is an unbiased representative sample of the population?

the first twenty customers to buy popcorn

every fifth customer that buys food other than popcorn

the first thirty customers to buy food other than popcorn

every tenth customer that buys food from the snack bar

Answer 1

Help please.....

Answer 2

The last one.

Answer 3

unbiased sample: a sample made up of members under the condition that every element in the population had an equal chance of being selected

representative sample: a sample whose makeup is similar enough to the whole population that conclusions about the sample can reasonably be applied to the whole population

Answer 4

thx

Answer 5

yw