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What is the average number of 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?
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
.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.
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