Bootstrap confidence intervals for percentiles of reliability data for wood-plastic composites

Improving product reliability is an important goal that may be achieved from a better understanding of the product's lower percentiles. These lower percentiles provide practitioners with an evaluation of the product's early failures along with providing information for specification limits, warranty, and cost analysis. Estimation of lower percentiles is sometimes difficult, since substantive data are often sparse in the lower tails. Bootstrap techniques provide important solutions for confidence interval evaluations of these percentiles.