Hello, Please assist me with confirming the following data is accurate, and answering the questions made bold. Attached are 2 photos of the calculation for the charts being filled out. First-born children tend to develop language skills faster than their younger siblings. One possible explanation for this phenomenon is that first-born children have undivided attention from their parents. If this explanation is correct, then it is also reasonable that twins should show slower language development than single children and that triplets should be even slower. In 1937, Davis found exactly this result. The following hypothetical data demonstrate this relationship. The dependent variable is a measure of language skill at age three. Do the data provide evidence for significant differences between the three populations? Test at the .05 level. Single Child 9 8 9 7 9 Twin Child 7 6 7 4 9 Triplet Child 3 5 8 1 3 State the null and alternative hypothesis. Fill in the following table of descriptive statistics. Descriptive Statistics N Mean SD Single 5 8.4 .8944 Twin 5 6.6 1.8166 Triplet 5 4 2.6458 Also, complete the following ANOVA table. Analysis of Variance of Sociability Data Source SS df MS F Between Groups 48.9333 2 24.4667 6.61261 Within Groups 44.4 12 3.7 If the F is statistically significant at p < .05 place an asterisk next to it and go on to compute a post-hoc test to determine which pairs of means are significantly different. Write a brief conclusion (interpretation) of the results
Hello, Please assist me with confirming the following data is accurate, and answering the questions made bold. Attached are 2 photos of the calculation for the charts being filled out.
First-born children tend to develop language skills faster than their younger siblings. One
possible explanation for this phenomenon is that first-born children have undivided attention from their parents. If this explanation is correct, then it is also reasonable that twins should show slower language development than single children and that triplets should be even slower. In 1937, Davis found exactly this result. The following hypothetical data demonstrate this relationship. The dependent variable is a measure of language skill at age three. Do the data provide evidence for significant differences between the three populations? Test at the .05 level.
Single Child
9
8
9
7
9
Twin Child
7
6
7
4
9
Triplet Child
3
5
8
1
3
State the null and alternative hypothesis.
Fill in the following table of
Descriptive Statistics
N Mean SD
Single 5 8.4 .8944
Twin 5 6.6 1.8166
Triplet 5 4 2.6458
Also, complete the following ANOVA table.
Analysis of Variance of Sociability Data
Source SS df MS F
Between Groups 48.9333 2 24.4667 6.61261
Within Groups 44.4 12 3.7
If the F is statistically significant at p < .05 place an asterisk next to it and go on to compute a post-hoc test to determine which pairs of means are significantly different.
Write a brief conclusion (interpretation) of the results.
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