An electronic component in a dental x-ray system has an exponential time to failure distribution with .

Question:

An electronic component in a dental x-ray system has an exponential time to failure distribution with. What are the mean and variance of the time to failure? What is the reliability at 30,000 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...