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 required value of μ is 0.309 (to 3 sf).
Calculating normal probabilities
5.14 Calculating normal probabilities from X-values
Example 57
A random variable X is normally distributed with a mean of 195 and a standard
deviation of 20 or x ~ N(195, 20)
2
. Calculate
a the probability that X is less than 190.
b the probability that X is greater than 194.
c the probability that X lies between 187 and 196.
Press
MENU
and choose 2: STAT and press
EXE
.
Press
F5
DIST
F1
NORM
F2
Ncd to use the Normal Cumulative
Distribution function.
Press
F2
Var.
This dialogue box is used to calculate normal probabilities.
a P(x < 190)
Enter Lower Bound as −1E99, Upper Bound as 190,
σ as 20
and μ as 195.
Press
EXE
.
The value 1E99 is the largest value
that can be entered in the GDC and is
used in the place of ∞. It stands for
1 × 10
99
( –1E99 is the smallest value
and is used in the place of –∞). To
enter the E, you need to press
EXP
.
You should enter the
values, Lower Bound,
Upper Bound,
σ and μ ,
in order.
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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