Display numeric view, Display plot view – HP 39g Graphing Calculator User Manual
Page 124
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11. Specify a 90% confidence interval in the C : field.
S S S /
7
!Ovc to the
C: field
0.9
(
enter
!
sx: .297844254603
6
.9
SqHptg Hg-jfi__________
Display
Numeric view
12. Display the confidence interval in the Numeric view.
Note: The interval setting is 0.5.
NUM
INF STAT NUMERIC VIEW|
C= . 9
Critic*]«. T=±2. 015048
n. Mir> =. 3469814
R Hcx =. 8370186
Display Plot
view
13. Display the confidence interval in the Plot view.
(
plot
I
/
.
\
T
-2.0
.3HE
______ 1
150HB t-CRIT. TO- 2.01S
aaiH 4-
a ^
.
b
3?
c
.532
04B
IBB
You can see, from the
second text row, that the
I——mni
mean is contained within the 90% confidence interval
(Cl) of 0.3469814 to 0.8370186.
Note: The graph is a simple, generic hell-curve. It is not
meant to accurately represent the t-distribution with 5
degrees of freedom.
9-8
Inference aplet