An electronic subassembly is known to have a failure rate that follows a Weibull distribution where the slope of the Weibull probability plot is 2.2 and the usage when 63.2% failed is 67 months....

An electronic subassembly is known to have a failure rate that follows a Weibull distribution where the slope of the Weibull probability plot is 2.2 and the usage when 63.2% failed is 67 months. Determine the percentage is expected to fail at an annual usage of 12 months.