Explain the purpose of an audit firm undertaking an audit of the design and

effectiveness of internal control procedures. (6 marks)

Part II

An auditor may perform the following three types of substantive procedures: (a) tests

of details of transactions; (b) tests of details of balances; and (c) analytical

procedures.

Below are specific audit procedures that fall within one of these categories:

1. Reconcile supplier statements at the year-end with balances in the purchase

ledger.

2. Agree a sample of sales invoices to goods despatch records held in the

inventory system.

3. Review post year-end receipts from customers to establish the extent of

unpaid debts.

4. Calculate gross profit ratios for each branch of a chain of supermarkets and

compare month by month and prior year.

5. Obtain schedule of asset disposals in the period and agree to supporting sale

documents.

6. Attend the factory on the final day of the year to review work in progress.

7. Agree payment to equipment hire company to a copy of the lease.

8. Calculate expected payroll costs from last year's amount adjusted for staff

changes and pay rise in the year.

Required:

For each procedure, classify which of the three types it belongs to. (8 marks)

Part III

Below are some audit tasks performed by an audit assistant:

1. An audit assistant opened the file of purchase invoices and selected 20 orders

as part of tests of controls over occurrence.

2. An audit assistant selected all material receivables balances for receivables

circularisation tests.

3. An audit assistant selected every hundredth sales invoice and checked to

goods despatched note.

Required:

Discuss whether the above individual audit task is considered as audit sampling

techniques or acceptable audit procedures? Explain your answer. (3 + 3 +