The following financial information was extracted from its 30 June 2023 forecast, updated on October 2022 for actual year- to-date results. ACCOUNTS/AMOUNTS ($M) FORECAST 30 JUNE 2023 ACTUAL 30 JUNE 2022 NET ASSETS 572 550 PROFIT BEFORE TAX 121 101 REVENUE 860 630 TOTAL ASSETS 700 650 Steylie Ltd.s accounts receivable balance was recorded at $4,000,000 and comprised more than 15,000 customer accounts. However, Steylie Ltd.s five largest customer balances comprised a high percentage of the recorded accounts receivable (more than $800,000, or 20%). You are responsible for deciding the best sampling technique. Based on prior audits and your experience, you have established the following parameters: Risk of incorrect acceptance 5% Tolerable error $200,000 Expected error $50,000 Required: 1. Calculate materiality thresholds set individually and in aggregate. 2. Explain the judgments you made in calculating the materiality threshold 3. Elect one particular sampling method and use that approach to calculate the necessary sample size. 4. Explain the judgments you made in calculating the sample size 5. Critically evaluate the audit risks in the materiality thresholds and the sampling size.