Final answer:
Middle managers are not responsible for setting organizational goals, defining strategies for achieving them, and making decisions that affect the entire organization.
Step-by-step explanation:
The statement is False. Middle managers are not responsible for setting organizational goals, defining strategies for achieving them, and making decisions that affect the entire organization. These are the responsibilities of top-level managers such as CEOs and executives. Middle managers, on the other hand, are responsible for implementing the strategies and goals set by the top-level managers and managing their respective departments or units.