Alice Zhong Is the VP of Operations at Pearl Financial

Multiple Choice

Alice Zhong is the VP of operations at Pearl Financial Services.She wants to measure customer satisfaction after a new website and other changes were introduced a few months ago.28% of clients are from the healthcare industry,35% are manufacturing companies,27% are financial firms,and 7% are construction companies.For this purpose,she gets random five-digits numbers from the website random.org (which offers true random numbers on the Internet) .Then she uses these numbers to select 140 random clients from the healthcare sector,175 from the manufacturing sector,135 from the manufacturing sector,and 35 from the construction sector.This is an example of ______.

A) disproportionate systematic sample
B) disproportionate stratified sample
C) proportionate stratified sample
D) proportionate systematic sample
E) proportionate cluster sampling