You have been asked by your firm to examine the payment vouchers of a company to
establish the level of errors and then decide whether better results can be obtained
through statistical techniques.
Required:
a) State the steps you would take in order to test the vouchers for the errors. (12
marks)
b) Why is it not satisfactory to pick vouchers from a limited period? (4
marks)
c) State under what circumstances statistical sampling is a good technique. (4
marks)