In a research study, elements selected in proportion from homogeneous sub-groups helps the researcher to achieve desired representation .The actual method of sampling to attain respondents from each sub-group was finally simple random sampling. Each stratum was properly represented so that the sample size drawn from the stratum was proportionate to the stratum share of the total population as indicated in the sampling frame below. This approach is more applicable to this research because it has a higher statistical efficiency and it is much easier to carry out, Zikmund (2010).