ONE HOUR LOAN $($Questions $1-3$ are based on this information$)$

One Hour Loan offers customized loans. Customers call a toll$-$free number with a specific loan request and obtain a response within an hour. One Hour Loan$$s business process includes five activities which must be conducted in the sequence described below. $($The time required for each activity is shown in parenthesis$)$:

Activity $1$: Answer customer call and record key information. $(4$ minutes$)$

Activity $2$: Gather and format the information $($obtain credit scores, organize customer specific needs$)$ for analysis. $(5$ minutes$)$

Activity $3$: Analyze the information: Check the creditworthiness and decide loan amount and APR to offer. $(7$ minutes$)$

Activity $4$: Perform final checks on loan offer. $(2$ minutes$)$

Activity $5$: Call the customer back with the new loan offer and close. $(4$ minutes$)$

Three workers conduct the whole process. The assignment of tasks to workers is the following:

W$1$ does Activity $1.$

W$2$ does Activities $2$ and $3.$

W$3$ does Activities $4$ and $5.$

$1)$ What is the bottleneck of the process $2)$ What is the utilization of worker $3?($You can assume that the process operates at capacity and you do not have to consider any empty system effects$).3)$ What is the average utilization of the workers? Assume the process operates at its capacity. Hint $$ you$$ll need to find the utilization of each worker.