Can someone please help with this?

work will result in point deductions. For all equations, round :0 two decimal places. RESEARCH SCENARIO I: A Communication Department at a large, mid-western university is comparing the performance of its graduate students (N = 30) against the national average on a standardized graduate exam, the GRE. GRE scores range from 130170. The national average score (m) is 156.50, and the departmental average () is 156.11, with a standard deviation (SD) of 13.02. 1. Based on the information above, what is the appropriate statistical for this scenario? (+2 points) A. One-sample Z test B. One-sample ttest C. Independent samples t test D. Chi-square test 2. Based on your choice for Question 1, and using a = .05, carry out the steps to test the prediction that the sample mean significantly lower than the population mean. (+21 points) 3. Since we've set the alpha risk level so low (a = .05), there is a risk that we will accept the alternative hypothesis when really the null hypothesis is true. What type of error is this? (+2 points) A. Type I error B. Type II error C. Type III error D. Type IV error RESEARCH SCENARIO