Chapter 11

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Click OK
Alternative =
Click Samples
nature of H1
IfInput
we
in different
assume
that
Confidence
Input
(in
ourFirst
case,
=C1,
columns
population
Level
=(1α)
× 100
greater
Second
than)
= C2
variances
are
(95.0
in our case)
equal,
then select
Input
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Click
Click
the
Stat
Basic
2first sample
Assume
Sample
data
Statistics
in column
t...
C1equal
and thevariance.
second in(In our
example,
column
C2 we do not
select this.)
Chart 11-1: Minitab Difference Between 2 Population Means
Click t-Test: Two-Sample
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Input
Variable(If1 Range =
Assuming Unequal
Variances
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of sample data 1 in
we know that therange
two population
column
A, Variable 2
variances are equal,
choose
Range =Equal
range of sample
Two-SampleClick
Assuming
Input
Tools
Input
Hypothesized
Alpha =
Input
Click
the sample
Data
data 2 in column B
Variances.)
Mean
value Difference
of level of =
data 1Analysis
in column A
test
significance
value of (μ(In
1μ2)
and the Sample
our
(In our
case,
case,
0.05)
60)
data 2 in column B
Chart 11-2: Excel Difference Between 2 Population Means
Click
Click OK
Options
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Click
Input
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Click
Stat
the
Basic
two sample
data
Paired
Statistics
Input
Input
in two
Test
tConfidence
columns
mean =
of
Level
the
testworksheet
=(1)×100
value of
(µ
(95.0
in
) ( our
=of0 case)
in our
Input
=
1µ2Alternative
Input
names
case)
of H1 (in our
columnsnature
containing
case,and
less than)
first sample,
second sample in
appropriate place
Chart 11-3: Minitab Paired T-Test
Input
Input
Input
data
Hypothesized
Alpha
range
= for
Variables
Mean
value Difference
of level
1 andof2=
Click t-Test:
test
significance
value
Pairedof (µ(1µ
= 2) (
Two Sample
= 0.05
0 in
forour
in our
case)
Click
Input
Tools,
the case)
Means
Data
sample
Analysis
data
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Chart 11-4: Excel Paired T-Test
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