What can be concluded about call center performance if a call duration target of less than $240$ seconds is$$ set?

Call centers today play an important role in managing$$ day$-$to$-$day business communications with customers. Call centers must be monitored with a comprehensive set of metrics so that businesses can better understand the overall performance of those centers. One key metric for measuring overall call center performance is the amount of time spent speaking to customers on the phone. The table given below contains data for the$$ time, in$$ seconds, spent by agents talking to $49$ customers. Complete parts$($a$)$ through$($c$)$ below.