Suppose that the service life in hours of a semiconductor de

Suppose that the service life (in hours) of a semiconductor device is a random variable having the Weibull distribution with alpha = 0.025 and beta = 0.500. What is the probability that such a device will still be in operating condition after 4,000 hours?

Solution

P(x>=4000)

use weibull.dist function in excel and subtract with 1.

=1-0.7140=0.2859