(Choose 1 answer)
A test engineer discovered that the cumulative distribution function of the lifetime of an equipment in years is given by
(See picture)
A. 4
B. 2.5
F(x)={1-e-22/5, 20 0,
C. 2.2
What is the expected lifetime of the equipment?
D. None of the other choices is correct
E. 3.5
Exit 4
