Canvas →XC i A文 X Use the data in the output tables below to calculate the effect size, r: Group Statistics If you have older children, have you breastfed before? N Mean Std. Deviation Std. Error Mean Yes 18 15.83 3.698 .872 What did you score on the pretest breastfeeding assessment? No 7 14.71 4.855 1.835 Independent Samples Test Levene's Test for Equality of Variances LL t-test for Equality of Means == 95% Confidence Sig. t df Sig. (2- tailed) Mean Difference Difference Std. Error Interval of the Difference Lower Upper What did you score on the pretest Equal variances assumed .883 .357 .623 23 .539 1.119 1.796 -2.596 4.834 breastfeeding assessment? Equal variances .551 8.854 .595 1.119 2.032 -3.488 5.726 not assumed 0.13 O.18 0.02 0.03 MacBook Pro

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 3CR
icon
Related questions
Question
Canvas
→XC
i
A文
X
Use the data in the output tables below to calculate the effect size, r:
Group Statistics
If you have older children,
have you breastfed before?
N
Mean
Std. Deviation
Std. Error Mean
Yes
18
15.83
3.698
.872
What did you score on the pretest
breastfeeding assessment?
No
7
14.71
4.855
1.835
Independent Samples Test
Levene's Test for
Equality of Variances
LL
t-test for Equality of Means
==
95% Confidence
Sig.
t
df
Sig. (2-
tailed)
Mean
Difference Difference
Std. Error
Interval of the
Difference
Lower
Upper
What did you
score on the
pretest
Equal variances
assumed
.883
.357
.623 23
.539
1.119
1.796
-2.596 4.834
breastfeeding
assessment?
Equal variances
.551 8.854 .595
1.119
2.032
-3.488
5.726
not assumed
0.13
O.18
0.02
0.03
MacBook Pro
Transcribed Image Text:Canvas →XC i A文 X Use the data in the output tables below to calculate the effect size, r: Group Statistics If you have older children, have you breastfed before? N Mean Std. Deviation Std. Error Mean Yes 18 15.83 3.698 .872 What did you score on the pretest breastfeeding assessment? No 7 14.71 4.855 1.835 Independent Samples Test Levene's Test for Equality of Variances LL t-test for Equality of Means == 95% Confidence Sig. t df Sig. (2- tailed) Mean Difference Difference Std. Error Interval of the Difference Lower Upper What did you score on the pretest Equal variances assumed .883 .357 .623 23 .539 1.119 1.796 -2.596 4.834 breastfeeding assessment? Equal variances .551 8.854 .595 1.119 2.032 -3.488 5.726 not assumed 0.13 O.18 0.02 0.03 MacBook Pro
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