The accompanying sample consisting of n 5 20 observations on dielectric breakdown voltage of a piece of epoxy resin appeared in the article "Maximum Likelihood Estimation in the 3 Parameter Weibull Distribution (IEEE Trans. on Dielectrics and Elec. Insul., 1996: 43-55). The values of (i 2 .5)yn for which z percentiles re needed are (1 2 .5)y20 5 .025, (2 2 .5)y20= .075,..., and .975. Would you feel comfortable estimating population mean voltage using a method that assumed.
