A single server queuing system with a Poisson arrival rate and exponential service time has an average arrival rate of $10$ customers per hour and an average service rate of $13$customers per hour. What is the probability that a customer waits $4$minutes or more in the line? Question $8$Answer

a$.0\mathrm{.}7692$

$$b$.0\mathrm{.}3702$

$$c$.0\mathrm{.}6298$

d$.0\mathrm{.}2308$

please give me the correct answer i give thumup

AK