4.1 The population, sample and sampling design
This research used the non-probability sampling or purposive sampling. This is a valuable kind of sampling to
obtain data from a specific respondent who can provide the paramount data in answering the research questions
(Sekaran, 2003). In order to select the appropriate sample, a proportionate stratified random sampling was used.
According to Sekaran (2003), this particular sampling design ensures that each important segment of the population
is represented, and more valuable and differentiated information is obtained with respect to each group.