Question

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 1

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.

Answer 2

Answer:

A.

Organize the employees into groups according to job​ title, and choose a random sample from each group.

B.

Assign each employee consecutive whole numbers starting with 1.​ Then, choose employees whose assigned numbers are even.