Question 2 (5 marks) Write null and a non-directional alternative hypotheses that can be tested with an Independent Samples t test. Provide a short description of your findings. Yen will provide assessment ef statj g1 eel significance for ALL questjens, For this question please also include your assessment and interpretation of practical significance of findings. You will need to provide the manual working out using '_a_verage SD' as denominator, as explained in the relevant ilecture. Question 3 (3 marks) Are people more willing to ask others if they are double vaccinated (for COVIDlQ) compared to their willingness to ask others how much they earn? Choose a suitable test to answer this question and provide a short description of results from your data analysis. Question 4 (3 marks) Test the hypothesis that there is no significant difference in systolic blood pressure before and after running the marathon. Choose a suitable test to answer this question and provide a short description of results from your data analysis