Final answer:
The appeals process is an informal and flexible way to resolve tax disputes and is available to both taxpayers and the IRS.
Step-by-step explanation:
The statement that is incorrect regarding the appeals process is that 3) The appeals process is a formal and time-consuming process.
The appeals process is actually an informal and flexible way to resolve tax disputes. It is available to both taxpayers and the IRS, allowing taxpayers to present their case to an independent appeals officer.