A sample of 7 electronic components was tested to failure in an environment that represented customer usage. All seven components failed. Failure times were 89.6, 109.2, 79.2, 54.6, 83.0, 86.5, and...

A sample of 7 electronic components was tested to failure in an environment that represented customer usage. All seven components failed. Failure times were 89.6, 109.2, 79.2, 54.6, 83.0, 86.5, and 29.1 months. Use the Weibull distribution to estimate the usage when 75% of the population is expected to experience failure.