A school psychologist is interested in determining if children with attention deficit disorder (ADD) learn better...

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. Please analyze this data using a two-tailed test at the α = .05 level.

Reading Group	Listening Group
8 10 7 12 6	15 12 13 11 10
x̅ = 8.6	x̅ = 12.2
SS = 23.20	SS = 14.8
n = 5	n = 5

The confidence interval for this study was calculated as .42 to 6.78. What is the appropriate interpretation of the confidence interval?

Expert Solution

orchestra answered 2 years ago

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