Abstract:
When different techniques of sampling are used, there are different formulas for determination of appropriate sample size.
The aim of this study was to employ formula for determining representative sample size, when simple random sampling technique is used test from one tail and two tails. At the level of significant, depending on that, the value of test from two tails, and one tail, with variance, Standard Error, and population proportion, was used to obtain different sizes of samples.
Excel office and SPSS package were used for sample size generation and analysis. To obtained results showed that, the sample sizes increases, as the variance increases. The result also showed significant Correlation between variance value ( ) and sample size ( ) when test from one tail and two tails. ....................
