Question $5(15$ pts$)$: Dataset below presents historical daily call volume $($number of calls$)$ at a call center for the last $3$ weeks. Assume that each day of a week represents a season. Forecast the call volume for day $30..($Show your work, that is$,$ not only report your forecasted number but also present$/$explain the method$/$formula you use.$)$

$\backslash$table$[[$Week $1,$Week $2,$Week $3],[$Time $($t$),$Day,# of calls,Time,Day,# of calls,Time,Day,# of calls$],[1,$Mon,$101,8,$Mon,$90,15,$Mon,$96],[2,$Tues,$113,9,$Tues,$110,16,$Tues,$114],[3,$Wed,$123,10,$Wed,$128,17,$Wed,$131],[4,$Thurs,$147,11,$Thurs,$149,18,$Thurs,$144],[5,$Fri,$135,12,$Fri,$129,19,$Fri,$132],[6,$Sat,$54,13,$Sat,$60,20,$Sat,$66],[7,$Sun,$83,14,$Sun,$78,21,$Sun,$75]]$