The managers of a large company wished to know the percentage of employees who feel "extremely satisfied" to work there. The company has roughly
23,00023,000
employees. Three scenarios are given in parts a through c below. For each scenario, determine the sampling method used by the managers.
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Part 1
a) Use the company e-mail directory to contact
150150
employees from among those employed for less than 5 years,
150150
from among those employed for 5-10 years, and
150150
from among those employed for more than 10 years.
A.
systematic sample
B.
stratified sample
C.
simple random sample
D.
cluster sample
E.
multistage sample
Part 2
b) Use the company e-mail directory to contact every
5050th
employee on the list. Choose the correct sampling method below.
A.
stratified sample
B.
cluster sample
C.
simple random sample
D.
multistage sample
E.
systematic sample
Part 3
c) Select several divisions of the company at random. Within each division, draw an SRS of employees to contact. Choose the correct sampling method below.
A.
systematic sample
B.
stratified sample
C.
multistage sample
D.
cluster sample
E.
simple random sample
a) Use the company e-mail directory to contact 150 employees from among those employed for less than 5 years, 150 from among those employed for 5-10 years, and 150 from among those employed for more than 10 years.Choose the correct sampling method below.Choose the correct sampling method below.