An electronic subassembly is known to have a failure rate that follows a Weibull distribution in which the shape parameter is 2.2 and its character life is 67 months. Determine the expected failure...

An electronic subassembly is known to have a failure rate that follows a Weibull distribution in which the shape parameter is 2.2 and its character life is 67 months. Determine the expected failure percentage at an annual usage of 12 months.

Given that the data below were selected from a log-normal distribution, determine the value when the probability is 0.20 of being less than this value. (Six Sigma Study Guide 2002.)

1.64   1.31   5.52  4.24   3.11   8.46   3.42