Quantiles of normal distributions can be calculated as shown without any reference to a statistical test. The normal quantiles that are typically used in statistical tests are those of the standard normal distribution N(0, 1), so you could simply use the PROBIT function. But many statistical tests are available through SAS procedures. In these cases you don't need to compute quantiles at all because SAS has already done this and provides you with ready-to-use p-values. Often in such cases the normal distribution is only an approximation of the exact distribution of a test statistic and the procedure might rather use that exact distribution (e.g., the t distribution in PROC TTEST).
From a mean and a standard deviation alone (as in dataset HAVE), no statistical test can be computed anyway.
If you need help with a statistical test, please start a new thread in the Statistical Procedures subforum, clearly state the null and alternative hypotheses or your research question and provide sample data (in the form of a data step), if any, together with a description of how they were collected and what else can be assumed.
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