A school psychologist is interested in determining if children with attention deficit disorder (ADD) learn better if English literature is read to them rather than having them read the material themselves. A random sample of 10 sixth graders with ADD is selected and divided into two groups of 5 each. One of the groups has a story read to them (Listening Group) and the other reads the story themselves (Reading Group). A quiz 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. The 95% confidence interval for equals _________.
A) 0.25 - 6.72
B) 0.31 - 4.47
C) 0.42 - 6.78
D) 0.47 - 5.64

Question

A school psychologist is interested in determining if children with attention deficit disorder (ADD) learn better if English literature is read to them rather than having them read the material themselves. A random sample of 10 sixth graders with ADD is selected and divided into two groups of 5 each. One of the groups has a story read to them (Listening Group) and the other reads the story themselves (Reading Group). A quiz 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.  The 95% confidence interval for equals _________.
A) 0.25 - 6.72 
B) 0.31 - 4.47 
C) 0.42 - 6.78 
D) 0.47 - 5.64

Quizplus · Accepted Answer

The Answer of A school psychologist is interested in determining if children with attention deficit disorder (ADD) learn better if English literature is read to them rather than having them read the material themselves. A random sample of 10 sixth graders with ADD is selected and divided into two groups of 5 each. One of the groups has a story read to them (Listening Group) and the other reads the story themselves (Reading Group). A quiz 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.  The 95% confidence interval for equals _________.
A) 0.25 - 6.72 
B) 0.31 - 4.47 
C) 0.42 - 6.78 
D) 0.47 - 5.64

A School Psychologist Is Interested in Determining If Children with Attention