Assume the life of a packaged magnetic disk exposed to corrosive gases has a Weibull distribution with

Question:

Assume the life of a packaged magnetic disk exposed to corrosive gases has a Weibull with β = 0.5 and the mean life is 600 hours.
(a) Determine the probability that a packaged disk lasts at least 500 hours.
(b) Determine the probability that a packaged disk fails before 400 hours.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...