Confidence Intervals - Casio fx-3650P Programming Manual

27

Confidence Intervals

For a random sample of size
confidence intervals for the population mean
σ
×
------ -
x 1.64 –
σ
×
------ -
x 1.96 –
σ
×
------ -
x 2.57 –
ON MODE MODE
x
？→ Ａ： －１．９６×√（Ａ ÷
＜ 39 STEP ＞
INPUT Ａ: Population variance
OUTPUT Ｂ,Ｃ: 95% confidence interval
Calculate 95% confidence intervals.
Data: 1.4, 1.5, 1.3, 1.4, 1.7, 1.5, 1.3 Population variance
The interval of 95% certainty for
µ
１．３３８＜ ＜１．５４８
MODE MODE
M+
1 4
,6
n
from normal distribution with known variance
µ
×
< < x + 1.64
n
µ
×
< < x +
1.96
n
µ
×
< < x +
2.57
n
MODE
n
）→ Ｂ： ＋１．９６×√（Ａ ÷
x
σ
µ
is:
5,
1
µ
may be calculated as given by:
σ
------ -
(90% confidence interval)
n
σ
------ -
(95% confidence interval)
n
σ
------ -
(99% confidence interval)
n
x
: sample mean
PRGM
1 MODE
x
:
SHIFT 2
2
µ
B < < C
S A
S A
5,
MODE 1 1
n
）→ Ｃ：Ｂ
x
n
:
1 SHIFT
2
σ
=
0.02
SD P1 P1 P2 P3 P4
P1 P1 P2 P3 P4
SD
2
σ
, the
Ｃ
n
S-SUM
1 3
D R G
D R G
37