Using these givens to answer the question that follows: Arrival rate: $0\mathrm{.}155$ calls per minute, Service rate: $0\mathrm{.}211$ calls per minute. In a single$-$server model what $s$ the probability of $0$ customers in the system?

$0\mathrm{.}305$

$0\mathrm{.}402$

$0\mathrm{.}749$

$0\mathrm{.}593$

$0\mathrm{.}080$

$0\mathrm{.}850$

$0\mathrm{.}954$

$0\mathrm{.}265$

$0\mathrm{.}125$

$0\mathrm{.}375$