HP 12C Financial Programmable Calculator Manuel d'utilisateur télécharger pdf (Page 146)

145

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

0.56

0.69

Average # customers waiting in

queue.

1.39 Average waiting time.

2.50 Average total time in the system.

1.25 Average # customers in system.

KEYSTROKES DISPLAY

CLEAR

00-

1 01- 1

02-44 33 0

03-45 48 0

04- 45 0

0 05- 0

06- 43 34

07-43, 33 09

08-43, 33 16

09- 40

10- 21

11- 43 36

12- 43 3

13- 10

1 2 ... 141 142 143 144 145 146 147 148 149 150 151 ... 164 165

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HP 12C Financial Programmable Calculator Manuel d'utilisateur Page 146