User Manual

customers in the waiting line at any time? The average waiting time? What is the
average total time for a customer to wait and be checked out? The average
number of customers in the system?
Keystrokes Display
.5 1
0.50
.9 2
2
0.56
1
0.69 Average # customers waiting in queue.
1
1.39 Average waiting time.
2
2.50 Average total time in the system.
1
1.25 Average # customers in system.
With an HP-12C program on can readily calculate the necessary probabilities for
this type of problem (dispensing with the use of tables) and perform additional
calculations as well.
KEYSTROKES DISPLAY
CLEAR
00-
1
01- 1
0
02-44 33 0
0
03-45 48 0
0
04- 45 0
0
05- 0
06- 43 34
09
07-43,33 09
16
08-43,33 16
09- 40
10- 21
11- 43 36
12- 43 3
13- 10