$9\mathrm{.}75$ Cal centers today play an important role in managing day$-$bo$-$day busness communications with customers. Ifs importiri, therefore, to morikor a comprehensine set of etetics, which can help businesses undersand the overal performance of a call center, One key metic for measurng overall cal certer pertomance is service level which is defned as the percentage of cals wowered by a human agent whin a specifed number of seconds, The fie SERVICELEVEL contans the following daza for time, in seconds, to answer $50$ incoming calls to a financial services call canter:

$\backslash$table$[[46,14,16,16,6,14,$is$,5,16,4,17,n,6,48,10],[15,12,6,19,16,1$e$,$ss$,13,25,0,17,12,10,5,15],[3,11,12,14,24,9,$to$,13,14,x,10,20,13,24,2$