Question: An educator believes that new directed reading activities in the classroom will help elementary school pupils improve some aspects of their reading ability. She arranges for a third—grade class of 21 students to take part in these activities for an eight-week period. A control classroom of 23 third-graders follows the same curriculum without the activities. At the end of the eight weeks, all students are given a Degree of Reading Power (DRP) test, which measures the aspects of reading ability that the treatment is designed to improve. The results are below. Assume there are no deviations from normality serious enough to forbid use of t procedures.

Use a formal test to analyze the results. Set up the formal hypothesis test assuming you believe the treatment group will do better. Feel free to use software. Find the P-value and interpret its value. Interpret your results.

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