Math Homework Help. In 1965 researchers used random digit dialing to call 1300 people and ask what obstacles kept them from exercising
In 1965 researchers used random digit dialing to call 1300 people and ask what obstacles kept them from exercising
A. Convenience sampling was used since 1300 phone numbers that were selected.
B. Systematic sampling was used since phone numbers were selected from a list using a fixed interval between phone numbers.
C. Simple random sampling was used since each number had an equal chance of being dialed so all samples of 1300 phone numbers had an equal chance of being selected.
D. Cluster sampling was used since the phone numbers were divided into groups several groups were selected and each number in those groups was called