All the assignment questions use this data set. These are synthetic data, but you may reference them in your answers as coming from assignment 2 data: test of blood pressure drug Note that all tables and graphs in this assignment should be presented with appropriate headings and footnotes. 1. Calculate a 95% condence interval for the estimated difference in mean systolic blood pressure between the group taking the drug and the group not taking the drug. Present this estimate and condence interval to 1 decimal place. As part of your answer state what probability distribution you will use to calculate this condence interval and why you will use this probability distribution and why it is appropriate for this data set. (8 marks)