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QUESTION 2 The director of a government agency heard that their financial department is receiving an average of 6 complaints from the customers in a week. To solve the problem, he assigned his secretary to collect some data to see if he needs to replace the supervisor of that department- The director will replace the supervisor if the actual mean number of complaints towards the financial department is greater than 6 per week. The secretary gathered data over the next 12 weeks and discovered that the mean number of weekly complaints towards the financial department is 7 with a variance of 3.25. a) Determine an appropriate statistical analysis to be used in this study. (1 mark) b) Calculate the tstatisti'c for this study. (2 marks) c) Test at the 5% significance level, is the director going to replace the department supervisor? Show the relevant steps