Suppose a grocery store manager wishes to survey the store's employees in order to determine whether they prefer expanding the existing break room or building an outdoor patio for the employees. a. How could the manager conduct an unbiased stratified sampling? b. How could the manager conduct an unbiased systematic sampling? Choose the correct answer below.

Answer: see explanation below for answer.

Explanation:

For A.

In order to conduct unbiased stratified sampling, the manager should divide the workers into groups according to their departments, and a sample is then randomly chosen among the groups.

For B.

In order to conduct unbiased systematic sampling, the manager can easily choose a worker randomly and then continue to choose every fifth worker of the population to select the members of the sample.