9. The length of time (in minutes) that a certain person speaks on the telephone is
found to be random phenomenon, with a probability function specified by the
probability density function f(x) as f(x)={Ae^-x/5 ,for greater than or equal to 0
{0,otherwise
(a)Find the value of A that makes f(x) a p.d.f.
(b) What is the probability that the number of minutes that person will talk over the
phone is (i) more than 10 minutes, (ii) less than 5 minutes and (iii) between 5
and 10 minutes.
Answers
Answer:
The length of time (in minutes) that a certain person speaks on the telephone is
found to be random phenomenon, with a probability function specified by the
probability density function f(x) as f(x)={Ae^-x/5 ,for greater than or equal to 0
{0,otherwiseThe length of time (in minutes) that a certain person speaks on the telephone is
found to be random phenomenon, with a probability function specified by the
probability density function f(x) as f(x)={Ae^-x/5 ,for greater than or equal to 0
{0,otherwiseThe length of time (in minutes) that a certain person speaks on the telephone is
found to be random phenomenon, with a probability function specified by the
probability density function f(x) as f(x)={Ae^-x/5 ,for greater than or equal to 0
{0,otherwise.