The Tool Crib at a Large Manufacturing Company Is Responsible

Multiple Choice

The tool crib at a large manufacturing company is responsible for providing tools to the factory workers on demand. The tool crib has a variable demand. Historically, its demand has ranged from 300 to 560 small tools per day with an average of 430. Diane, the tool crib attendant, works eight hours a day, five days a week. Each order is for one small tool and each small tool takes Diane 1 minute to retrieve from the bins.
What is the average waiting time, in minutes? (Round the final answer to the first decimal place.)

A) 1.0
B) 3.3
C) 4.3
D) 5.3