Question

The reliability R(t) of an item is assumed to be exponentially
decreasing function :
R(t) = exp (-t/10-4 days)
What is the probability that the item will still be functioning without
failure at t = 300 days, given that the unit functioned without failure
at t = 1 00 days ?

Answer 1

Answer:

(r) =10-2=(t-3) =(1+4)=(5)