Assembly Language Programming: Inferential Statistics and Distribution Functions
6
9
Display the inferential statistics
and distribution editor for
TIntl
and select
Stats
in the
Inpt
field.
:
-
Œ
/
'
&
/
(
~
Í
J
Enter the test requirements:
¦
Store 64.5 to
þ
¦
Store 2.8 to
Sx
¦
Store 90 to
n
†
64
Ë
5
Í
2
Ë
8
Í
90
Í
K
Calculate
the test. The
results
are displayed on the home
screen.
&
If the height distribution among a population of women is normally distributed
with a mean
m
of 65 inches and a standard deviation
σ
of 2.5 inches, what height is
exceeded by only 5 percent of the women (the 95th percentile)?
L
Display the
STAT DISTR
(Distributions) menu.
‘
y
Œ
/
'
'
M
Paste
invnm(
to the home
screen. (
invnm
stands for
Inverse Normal.)
(
N
Enter .95 as the area, 65 as
µ
,
and 2.5 as
σ
.
Ë
95
¢
65
¢
2
Ë
5
¤
Í
The result is displayed on the home screen; it shows that five percent of the
women are taller than 69.1 inches (5 feet 9.1 inches).
Now graph and shade the top five percent of the population.
O
Set the window variables to these
values:
xMin=55
yMin=
L
.05
xRes=1
xMax=75
yMax=.2
xScl=2.5
yScl=0
6
'
P
Display the
STAT
DRAW
menu.
.
y
Œ
/
'
(
Q
Paste
ShdNm(
to the home
screen. (
ShdNm
stands for Shade
Normal.)
&
The parameters are
invnm(
area[,
m
,
s
]).
