A school psychologist is interested in determining if children with attention deficit hyperactivity disorder (ADHD) learn better if English literature is read to them rather than having them read the material alone by themselves. A random sample of 10 sixth graders with ADHD is selected and divided into two groups of n=9. One of the groups has a story read to them (Listening Group) and the other reads the story alone by themselves (Reading Group). A test on the story is given after each group has finished reading or hearing the story. The following scores were obtained with 20 being a perfect score. what is the r2? Reading GroupListening Group101510121312118.108.9.10116.101111Count(n)9.Mean9.44444444411.33333333DEVSQ(SS)STDEV.S20.22222222261.5898986691.802775638df8.8.S(M1-M2)0.80111alpha0.05tcrittobs2.1199-2.35DecisionReject HoCohen's d1.1113Fail to reject Ho t-Test: Two-Sample Assuming Equal VariancesG1G2Мean11.444444448.777777778Variance3.9444444443.277777778Observations9.Pooled Variance3.611111111Hypothesized Meandf16t Stat-2.97683363P(T<=t) one-tail0.004449553t Critical one-tail1.745883676P(T<=t) two-tailt Critical two-tail0.0088991052.119905299

Given information: A random sample of 10 sixth graders with ADHD is considered and divided into two…

Answered: Reading Group Listening Group 10 15 10…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A school psychologist is interested in determining if children with attention deficit hyperactivity disorder (ADHD) learn better if English literature is read to them rather than having them read the material alone by themselves. A random sample of 10 sixth graders with ADHD is selected and divided into two groups of n=9. One of the groups has a story read to them (Listening Group) and the other reads the story alone by themselves (Reading Group). A test on the story is given after each group has finished reading or hearing the story. The following scores were obtained with 20 being a perfect score. what is the r2?

Reading Group
Listening Group
10
15
10
12
13
12
11
8.
10
8.
9.
10
11
6.
10
11
11
Count(n)
9.
Mean
9.444444444
11.33333333
DEVSQ(SS)
STDEV.S
20.22222222
26
1.589898669
1.802775638
df
8.
8.
S(M1-M2)
0.80111
alpha
0.05
tcrit
tobs
2.1199
-2.35
Decision
Reject Ho
Cohen's d
1.1113
Fail to reject Ho

t-Test: Two-Sample Assuming Equal Variances
G1
G2
Мean
11.44444444
8.777777778
Variance
3.944444444
3.277777778
Observations
9.
Pooled Variance
3.611111111
Hypothesized Mean
df
16
t Stat
-2.97683363
P(T<=t) one-tail
0.004449553
t Critical one-tail
1.745883676
P(T<=t) two-tail
t Critical two-tail
0.008899105
2.119905299

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