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 = .05 level.

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

What kind of statistical test should be performed?

What is the critical value of the test statistic?

What is the standard error for the test statistic?

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