Remaining Time: 1 hour, 14 minutes, 07 seconds. Question Completion Status: Question 1 15 points Save A A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. The researchers want to see if there is a difference in mean scores before and after the logic course. The results are given below. Assume the samples are simple random samples, and the pairs of values are from a population having a distribution that is approximately normal. Before 74 83 75 88 84 63 93 84 91 77 er 73 77 70 77 74 67 95 83 84 75 Answer the following: a. Find d-bar b. What is n, the sample size? c. Is this an independent or dependent sample d:. Identify the null hypothesis and the alternative hypothesis. e. What is the equation you would use to find the test statistic? Note: Write out the equation; do not fill in any of the numbers. 1 . For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac) BIUS Paragraph Arial 10pt A v & V ... Bullet list E E E , X2 X 2 + ABC v V