A data set from a study that examined the effect of a specific diet on blood pressure is provided . Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure. Fully interpret the results in the context of this study (i.e., report the conclusions as related to the research question).
A data set from a study that examined the effect of a specific diet on blood pressure is provided . Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure. Fully interpret the results in the context of this study (i.e., report the conclusions as related to the research question).
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
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A data set from a study that examined the effect of a specific diet on blood pressure is provided . Participants (n = 72) were randomly assigned either to a group that was put on the diet (Diet = Present) or to a group that was not put on the diet (Diet = Absent), and researchers wanted to know whether the diet had a significant impact on blood pressure.
Fully interpret the results in the context of this study (i.e., report the conclusions as related to the research question).
![Т-Test
[DataSet0]
Group Statistics
Std. Error
Diet
Mean
Std. Deviation
Mean
BldPres
Absent
36
193.0000
17.44379
2.90730
Present
36
176.0000
13.87907
2.31318
Independent Samples Test
Levene's Test for Equality of
Variances
t-test for Equality of Means
95% Confidence Interval of the
Difference
Mean
Std. Error
F
Sig.
df
Sig. (2-tailed)
Difference
Difference
Lower
Upper
BldPres
Equal variances
1.274
.263
4.576
70
.000
17.00000
3.71526
9.59014
24.40986
assumed
Equal variances not
4.576
66.636
.000
17.00000
3.71526
9.58356
24.41644
assumed
Independent Samples Effect Sizes
95% Confidence Interval
Point
Standardizer
Estimate
Lower
Upper
BldPres
Cohen's d
15.76252
1.079
.580
1.570
Hedges' correction
15.93396
1.067
.574
1.553
Glass's delta
13.87907
1.225
.675
1.762
a. The denominator used in estimating the effect sizes.
Cohen's d uses the pooled standard deviation.
Hedges' correction uses the pooled standard deviation, plus a correction factor.
Glass's delta uses the sample standard deviation of the control group.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Feef72c94-d59d-478e-9030-e3b119ce1179%2F827fc55c-8bab-4cf8-a8fd-def73746fffc%2Fgmje3bd_processed.png&w=3840&q=75)
Transcribed Image Text:Т-Test
[DataSet0]
Group Statistics
Std. Error
Diet
Mean
Std. Deviation
Mean
BldPres
Absent
36
193.0000
17.44379
2.90730
Present
36
176.0000
13.87907
2.31318
Independent Samples Test
Levene's Test for Equality of
Variances
t-test for Equality of Means
95% Confidence Interval of the
Difference
Mean
Std. Error
F
Sig.
df
Sig. (2-tailed)
Difference
Difference
Lower
Upper
BldPres
Equal variances
1.274
.263
4.576
70
.000
17.00000
3.71526
9.59014
24.40986
assumed
Equal variances not
4.576
66.636
.000
17.00000
3.71526
9.58356
24.41644
assumed
Independent Samples Effect Sizes
95% Confidence Interval
Point
Standardizer
Estimate
Lower
Upper
BldPres
Cohen's d
15.76252
1.079
.580
1.570
Hedges' correction
15.93396
1.067
.574
1.553
Glass's delta
13.87907
1.225
.675
1.762
a. The denominator used in estimating the effect sizes.
Cohen's d uses the pooled standard deviation.
Hedges' correction uses the pooled standard deviation, plus a correction factor.
Glass's delta uses the sample standard deviation of the control group.
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