statistic spss

The instructor for the statistics class, who created and placed all of her data into Stat_Grades.sav, provided additional opportunities for students to learn the material in the course by holding review sessions. Did attending the review sessions make a significant difference in student’s performance on the Final Examination? Based on your analysis, what would you tell the instructor?

2. Based on many previous classes, the instructor for the statistics class believes a class with a final class percent of 85 should be considered a successful class. Do her classes (represented in the Stat_Grades data set – sections 1, 2, and 3) differ significantly from what the instructor considers to be the mean percentage for a successful class? Include the null and alternative hypotheses, the SPSS results, an explanation of the SPSS results, and a conclusion that is written in terms that any person could understand.

3. Using the Stat_Grades data set compare Quiz 1 and Quiz 3 and determine if there is a statistically significant difference in the average student performance between these two Quizzes. Be sure to provide the evidence for your conclusion. Include the null and alternative hypotheses, the SPSS results, an explanation of the SPSS results, and a conclusion that is written in terms that any person could understand.