The life time X of an electronic component has the exponential distribution such that Pr(X 1000) 0 75 What is the expected lifetime of the component ...

The life time X of an electronic component has the exponential distribution such that Pr(X 1000)

Question:

The life time X of an electronic component has the exponential such that Pr(X ≤ 1000) = 0.75. What is the expected lifetime of the component?
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...