Conversion to new computer programs must be undertaken using contingency plans to ensure that only authorized, tested, and approved versions of the programs are promoted to production status

The first step in the fieldwork process is the selection of field workers

Indicate whether the statement is true or false

Customers arrive at a bank at a rate of 50 per hour. The bank has 3 tellers and on average, it takes 2 minutes to service a customer

(a) What proportion of time are the tellers busy? (b) What is the average number of customers in the bank? (c) What is the average weight time?