2. Here are the data for an experiment designed to help increase reading comprehension. Researchers predict that the new reading program will increase comprehension of reading materials. Participants...

Extracted text: 2. Here are the data for an experiment designed to help increase reading comprehension. Researchers predict that the new reading program will increase comprehension of reading materials. Participants were tested in their reading comprehension of a novel after 4 weeks of the program. Final comprehension scores were given to each participant. Use alpha .05 for the following problems. Program Involvement N 36 36 78 66 8 8 a. Create a confidence interval for each group's mean using alpha .05 i. State level of confidence. ii. Calculate confidence interval. iii. State your conclusion. b. Use a t-test to analyze the difference between the 2 means. i. State the null and alternative hypotheses ii. Make a decision about the null. iii. State your conclusion. iv. Relate your conclusion to the research. c. Calculate the 2 statistics that estimate the strength of effect. i. r a. Interpret each result. ii. Cohen's d a. Interpret each result.