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).

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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.
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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