Is what I have on there correct? Also I need help with the throughout rate

1. Beautiful Nail Salon (4 points; 1 point per question) Tammy Smith runs an upscale nail salon. The service process includes five activities that are conducted in the sequence described below. (The time required for each activity is shown in parentheses): Activity 1: Welcome a guest. (1 minute) Activity 2: Clip and file nails. (3 minutes) Activity 3: Paint. (5 minutes) Activity 4: Dry. (10 minutes) Activity 5: Check out the customer. (4 minutes) Three servers (S1, S2, and S3) offer the services in a worker-paced line. The assignment of tasks to servers is the following: Si does Activity 1. S2 does Activities 2 and 3. S3 does Activities 4 and 5. SF = 60 customers/or Sa= b = 7.50 SoF to a = 4.3 astomers/hr The drying process does not require server 3's constant attention; she/he needs to only escort the customer to the salon's drying chair (equipped with fans for drying). The time to do this is negligible. Only one drying chair exists in the salon. 1a. Which activity is the bottleneck of the process? Why is it important to determine this? Activity 4 is the bottleneck. It's important to determine this so you know which step limits the capacity of the process. Reducing the time of that activity could get more customers through the system. 3+5+10+4=123 min) 1b. What is the throughput time of the process? Why would this information be needed? This is needed to determine the average time a customer spends at the salon. 1c. What is the throughput rate once each step has been activated, and the system is busy? 1d. Assume a wage rate of $12 per hour, and the system is busy. What are the direct labor costs for one customer (in dollars)? - 1263) labor costa wage ihr flow rate 1=28.37 / custo