To quantify uncertainty around point estimates of conditional objects such as means or variances, parameter has to be taken into account. Attempts incorporate are typically based on the unrealistic assumption observing two independent processes, where one is used for estimation, and other conditioning upon. Such foundation raises question whether these intervals theoretically justified in a rea...

This paper deals with construction of confidence intervals for process capability index using bootstrap method (proposed by Chen and Pearn in Qual Reliab Eng Int 13(6):355–360, 1997) by applying simulation technique. It is assumed that the quality characteristic follows type-II generalized log-logistic distribution introduced by Rosaiah et al. in Int J Agric Stat Sci 4(2):283–292, (2008). Discu...