300
Example
To calculate the 1-Sample
t
Interval for one list of data
For this example, we will obtain the 1-Sample
t
Interval for data
= {11.2, 10.9, 12.5, 11.3, 11.7} when C-Level = 0.95.
1
(List)
c
a.jf
w
1
(List1)
c
1
(1)
c
1
(CALC)
Left ................. interval lower limit (left edge)
Right ............... interval upper limit (right edge)
o
..................... sample mean
x
%
n
-1
................ sample standard deviation
n
..................... sample size
u
u
u
u
u
2-Sample
t
Interval
2-Sample
t
Interval
calculates the confidence interval when the difference
between the means of two samples is known. The
t
Interval is applied to
t
distribution.
The following confidence interval applies when pooling is in effect.
Left
=
(
o
1
–
o
2
)
–
t
)
2
Right
=
(
o
1
–
o
2
)
+
t
)
2
n
1
+
n
2
–2
n
1
1 +
n
2
1
x
p
n
–1
2
%
n
1
+
n
2
–2
n
1
1 +
n
2
1
x
p
n
–1
2
%
The following confidence interval applies when pooling is not in effect.
Left
=
(
o
1
–
o
2
)–
t
df
)
2
Right
=
(
o
1
–
o
2
)+
t
df
)
2
+
n
1
x
1
n
–1
2
%
n
2
x
2
n
–1
2
%
+
n
1
x
1
n
–1
2
%
n
2
x
2
n
–1
2
%
C
=
df
=
1
C
2
n
1
–1
+
(1–
C
)
2
n
2
–1
+
n
1
x
1
n
–1
2
%
n
1
x
1
n
–1
2
%
n
2
x
2
n
–1
2
%
18 - 7
Confidence Interval
Summary of Contents for CFX-9970G
Page 22: ... CFX 9970G ...
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Page 453: ...436 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
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