Final answer:
The average duration of financial statement fraud, according to the COSO study, is forty-five days.
Step-by-step explanation:
The average duration of financial statement fraud, according to the study by the Committee of Sponsoring Organizations (COSO), is forty-five days. This finding is supported by a reference to Willcocks (1913, 1: 301).
It is important to note that other durations are also mentioned in the study, such as those provided by Barois (2010: 25).