4. To investigate whether accounting quality affects the firm value, the following regression is considered: FirmValue = a + B, AQ + B2FirmSizet + Hz Required: (a). How would you modify the above model to be able to test the hypothesis that the firm value is higher after the adoption of the International Financial Reporting Standards (IFRS)? Explain the modified model, the expected results and the implication of the results. (15 marks) (b). How would you modify the above model to test the hypothesis that the average impact of the accounting quality on the firm value is higher after the adoption of IFRS? Explain the modified model, the expected results and the implication of the results. (15 marks) 4. To investigate whether accounting quality affects the firm value, the following regression is considered: FirmValue = a + B, AQ + B2FirmSizet + Hz Required: (a). How would you modify the above model to be able to test the hypothesis that the firm value is higher after the adoption of the International Financial Reporting Standards (IFRS)? Explain the modified model, the expected results and the implication of the results. (15 marks) (b). How would you modify the above model to test the hypothesis that the average impact of the accounting quality on the firm value is higher after the adoption of IFRS? Explain the modified model, the expected results and the implication of the results. (15 marks)