Casio fx-9860GII User Manual

Using a graphic display calculator
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser’s institute
Casio fx-9860GII
The calculator shows that
P(X = 2 ) = 0.0758 (to 3 sf)
ii
PX
eee
()
...
(.)
!
(.)
!
(.)
!
≤=
−−−
×
+
××
+2
05 0 05 1 05 2
05
0
05
1
05
2
The calculator can fi nd this value directly.
Press
MENU
, and choose 2: STAT and press
EXE
.
Press
F5
DIST |
F6
|
F1
POISN|
F2
Pcd to use the Poisson
cumulative distribution function.
Enter the X value and the parameter.
Leave Data as Variable and Save Res as None.
Select Execute and press
EXE
.
The calculator shows that
P(X ≤ 2 ) = 0.986 (to 3 sf)
iii
PX
eee
()
...
(.)
!
(.)
!
(.)
!
>=
−−−
×
+
××
+2
05 3 05 4 05 5
05
3
05
4
05
5
= 1 − P (X ≤ 2)
First you need to calculate P(X ≤ 2 ).
Press
MENU
, and choose 2: STAT and press
EXE
.
Press
F5
DIST |
F6
|
F1
POISN|
F2
Pcd to use the Poisson
cumulative distribution function.
Enter the X value and the parameter.
Leave Data as Variable and Save Res as None.
Select Execute and press
EXE
.
{ Continued on next page
50

Casio fx-9860GII Specifications

General

Type	Graphing
Form factor	Desktop
Control type	Buttons
Product color	Silver
Housing material	Plastic
Built-in capability	Yes
Digits	- digits
Display type	LCD
Second display	No
Display tilting	-
Display resolution	64 x 128 pixels
Display character size	8 x 21 mm
Display number of lines	8 lines
Display number of characters	21
Flash memory	1.5 MB
RAM capacity	0.064 MB
Storage media type	Flash
Battery type	AAA
Power source	Battery
Number of batteries supported	4