$5$ pts

Arrival Rate $=1$ customer every $4$ minutes

Service Rate $=22$ customers per hour

In a single server model: Calculate the probability that a new customer will be served immediately. $($Choose the closest answer$)$

$0\mathrm{.}249$

$0\mathrm{.}217$

$0\mathrm{.}318$

$0\mathrm{.}455$

$0\mathrm{.}533$

$0\mathrm{.}600$