Question

does the result suggest that a sample proportion is an unbiased estimator of a population proportion?
o a. yes, because the sample proportions and the population proportion are the same.
o b. no, because the sample proportions and the population proportion are the same.
o c. yes, because the sample proportions and the population proportion are not the same.
o d. no, because the sample proportions and the population proportion are not the same.

Explanation:

An unbiased estimator has an expected value equal to the parameter it estimates. If the sample proportions (which are estimates) and the population proportion (the parameter) are the same, the sample proportion is an unbiased estimator.

Answer:

A. Yes, because the sample proportions and the population proportion are the same.