time study is made of a tool crib and it is found that the p

time study is made of a tool crib and it is found that the probability of it taking more than T minutes to fill an order is given by the expression e^-0.2T

^{Please show all steps, trying to understand the concept.}

Solution

It is basically giving the details of the time an order last.

These type of information is generally asked in Poission distribution where the rate of the poission distribution is known but need to find a success without a prticular time frame.we have to map that success with this possibility of of occurrence for time.