The STAT 200 instructors for World Campus want to compare STAT 200 students' overall scores on the MyStatLab Practice Problems and Unit Quizzes. In a random sample of 64 students from Fall 2016 semester, the mean difference between a student's MyStatLab overall score and Unit Quiz overall score was 2.07 points with a standard deviation of 17.81 points. Scores tended to be higher on the Unit Quizzes. Use Minitab Express to answer the following questions. Hint: You will have to enter in these statistics as \"summarized data.\" a. Construct a 95% confidence interval for the mean difference between the scores on the two assignments. b. Use the five step hypothesis testing procedure to test the alternative hypothesis that scores are different on the two assignment categories. i. Step 1: Write the null and alternative hypotheses: ii. Step 2: Calculate the test statistic. Include your output! What is the value of the test statistic? iii. Step 3: Determine the p-value. iv. Step 4: Decide between the null and alternative. Explain your decision. v. Step 5: State a real world conclusion