2) Lily conduets a survey of a large sample of n staff in the canteen. Lily found that the average pay for the staff in the canteen this year is I. Over the last several decades, the average pay canteen staff received has been . The standard deviation is . Is the amount of pay canteen staff received this year significantly different from the long-run average? In order to test the hypothesis "Is the amount of pay canteen staff received this year significantly different from the long-run average?", please answer the following questions: a) Please write out the null hypotheses (H0) as well as the alternative hypothesis (HA) in this case (2 marks). b) Please write out the assumptions for using parametric test. (4 marks) Are you using parametric test or nomparametric test in this case? ( 1 mark) c) What statistical test do you want to choose to test the above hypothesis? Why? ( 3 marks) d) What desired level of significance do you want to choose? Why? (2 marks) e) Can you write out the equation of how to compute the actual test value? ( 2 marks) How to decide whether a null hypothesis is supported or rejected? Please explain the different ituations. (2 marks)