1. The manager of Jerry’s Barber Shop recently asked 15 customers to punch in a time card when first arriving at the shop and to punch out right after they paid for their haircut, and used the data on...

1. The manager of Jerry’s Barber Shop recently asked 15 customers to punch in a time card when first arriving at the shop and to punch out right after they paid for their haircut, and used the data on the cards to measure how long (in minutes ) it took Jerry and his barbers to cut hair. He also recorded the amount of money spent by each of the 15 customers as well as the customer's stage of life (Child, Teen, or Adult).

a. Identify the population in the above scenario. (2 pts.)

b. Identify the variables and their units (if any). (6 pts.)

Variable 1: Unit:

Variable 2: Unit:

Variable 3: Unit: