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8/16/2019 Intervalo Confianza Media (Formulas)
1/10
8/16/2019 Intervalo Confianza Media (Formulas)
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n
µ
8/16/2019 Intervalo Confianza Media (Formulas)
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!
"
# "
n X X X ,....,, 21
( )
−−
=−
−=
=
==
=
21
2
1
2
2
1
11 X
n
X
n
n
n
X X s
n
X
X
n
i
i
n
i
i
n
i
i
8/16/2019 Intervalo Confianza Media (Formulas)
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!
$%&α' µ
n
st X n 2 / 1,1 α −−±
2 / 1)( 2 / 1,11 α α −=≤ −−− nn t t P
8/16/2019 Intervalo Confianza Media (Formulas)
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( $%&α'
)
* $%&α' +
+ $%&α', * *
! * *
$%&α'
#
8/16/2019 Intervalo Confianza Media (Formulas)
6/10
8/16/2019 Intervalo Confianza Media (Formulas)
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8/16/2019 Intervalo Confianza Media (Formulas)
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*
+
34.
* #
67.263.340.1410
1163.3
11
66.399.233.325.3
10
11
63.311
66.399.233.325.3
22
2222
2=−=
−
++++=
=++++=
s
X
66.399.257.4
99.321.302.478.3
89.227.433.325.3
8/16/2019 Intervalo Confianza Media (Formulas)
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*
6 "
( "
2281.2
975.02 / 195.0)1(
1163.167.263.3
975.0,10
2
=
=−→=−
==→==
t
nss X
α α
( )73.4,53.210.163.311
63.12281.263.3
2 / 1,1
→±=±
± −−n
st X n α
8/16/2019 Intervalo Confianza Media (Formulas)
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) 7
#
8 + + * *
# 9 + * *
! * :$µ,σ' + !+ ! 6
+