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Owner: jdzuray
Created: Apr 24, 2019
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Two sample T confidence interval

Two sample T confidence interval:


μ1 : Mean of Aud-Before
μ2 : Mean of Aud-After
μ1 - μ2 : Difference between two means
(without pooled variances)

95% confidence interval results:
DifferenceSample Diff.Std. Err.DFL. LimitU. Limit
μ1 - μ291.87252915.41853194.2425161.463301122.28176

By gfarias1
On Apr 24, 2019
Two sample T hypothesis test final lab

Two sample T hypothesis test:


μ1 : Mean of Aud-Before
μ2 : Mean of Aud-After
μ1 - μ2 : Difference between two means
H0 : μ1 - μ2 = 0
HA : μ1 - μ2 ≠ 0
(without pooled variances)

Hypothesis test results:
DifferenceSample Diff.Std. Err.DFT-StatP-value
μ1 - μ291.87252915.41853194.242515.958579<0.0001

By jdzuray
On Apr 24, 2019
Two sample T hypothesis test final lab

Two sample T hypothesis test:


μ1 : Mean of Vis-Before
μ2 : Mean of Vis-After
μ1 - μ2 : Difference between two means
H0 : μ1 - μ2 = 0
HA : μ1 - μ2 ≠ 0
(without pooled variances)

Hypothesis test results:
DifferenceSample Diff.Std. Err.DFT-StatP-value
μ1 - μ228.7177429.7118425232.878712.95698180.0034

By jdzuray
On Apr 24, 2019
Two sample variance hypothesis test final lab

Two sample variance hypothesis test:


σ12 : Variance of Vis-Before
σ22 : Variance of Vis-After
σ1222 : Ratio of two variances
H0 : σ1222 = 1
HA : σ1222 ≠ 1

Hypothesis test results:
RatioNum. DFDen. DFSample RatioF-StatP-value
σ12221231231.62249911.62249910.0077

By jdzuray
On Apr 24, 2019
QQ Plot final lab
QQ Plot final lab
By jdzuray
On Apr 24, 2019
 
Reports with this result:
final lab
By jdzuray
On Apr 24, 2019
Two sample variance hypothesis test final lab
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Two sample variance hypothesis test:


σ12 : Variance of Aud-Before
σ22 : Variance of Aud-After
σ1222 : Ratio of two variances
H0 : σ1222 = 1
HA : σ1222 ≠ 1

Hypothesis test results:
RatioNum. DFDen. DFSample RatioF-StatP-value
σ12221201242.82556982.8255698<0.0001


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<A href="https://www.statcrunch.com/5.0/viewresult.php?resid=2676625">Two sample variance hypothesis test final lab</A>

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