Here is a problem out of the review for Chapter 7 (the answers for this problem are in the back of the book: Reports indicate that graduating seniors in a local high school have an averase (u) reading comprehension score of 72.55 with a standord deviation (o) of 12.62. As an instructor in a GED program that provides aiternative educational opportunities for students you're curious how seniors in your program compare. Selecting a sample of 25 students from your program and administering the same reoding comprehension test, you discover a sample mean ( x-bar) of 79.53. Assume that youre working at the .05 level of significance. 1. What is the appropriate null hypothesis for this problem? 2. What is the critical value? 3. What is the calculated test statistic? 4. What is your conclusion?