(a) The starting salary of Bachelor of Business graduates in Australia is known to be normally distributed. An Australian university claims that the average starting sala graduates has increased since 2017. The average salary in 2017 was $55,000. A sample of 36 graduates were chosen from the batch of 2021. The average salary an standard deviation in the sample was found to be $56,600 and $4,800 respectively. A prospective student wishes to investigate the University's claim at 1% level of sig Use the following 6 step procedure to arrive at your conclusion. Step 1. Statement of the hypotheses (2 marks) Step 2. Test statistic and the standardised test statistic (0.5 mark) Step 3. Level of significance (0.5 mark) Step 4. Decision rule (2 marks) Step 5. Computation of the value of the test statistic (2 marks) Step 6. Conclusion