Suppose that an electronic system comprises four components, and let Xj denote the time until component j

Question:

Suppose that an electronic system comprises four components, and let Xj denote the time until component j fails to operate (j = 1, 2, 3, 4). Suppose that X1, X2, X3, and X4 are i.i.d. random variables, each of which has a continuous with c.d.f. F(x). Suppose that the system will operate as long as both component 1 and at least one of the other three components operate. Determine the c.d.f. of the time until the system fails to operate.
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...