Figure 1: A graph of an S-D distribution based on the pdf in (2.4). The values of skew and kurtosis were determined based on (A.2) for and in the Appendix. The values of and were determined based on (3.4) and (3.5). The estimates ( ; ) and bootstrap confidence intervals (C.I.s) were based on resampling 25,000 statistics. Each sample statistic was based on a sample size of .