Question

A newly hired IT specialist for a company wants to know about how many of the employees are running outdated versions of a program. Which sampling method will result in a sample that is not biased?
a. He lists the office phone numbers of every employee and programs his computer to randomly select 50 of those numbers.

b. He puts notices in the break rooms asking employees to e-mail him the version they are running.

c. He walks around and checks the version when he sees an employee using the program.

d. He asks every other employee he sees in the cafeteria about his or her program

Answer 1

my answer is a. is it right???

Answer 2

You are correct. Collecting a random sample is the best way because it's the most representative of the population.

Answer 3

thank you!

Answer 4

yw