Write a research proposal on "How internal audit function in banks and their effects on fraud detection rates and practices?" following the format below. (2500 words)

Title Abstract 1.0 Introduction 1.1 Problem Statement 1.2 Aim(s) and Objectives 1.3 Significance of Study 1.4 Outline of Study 2.0 Literature Review 2.1 Theoretical Review 2.2 Empirical Review 2.3 Summary of Literature (hint: try to link the objectives of the study with the empirical findings/literature) 3.0 Proposed Methodology 4.0 Expected Outcomes and Limitations