No, the level of output can be influenced by fixed input. Fixed input refers to input factors that cannot be changed in the short term, such as the size of a factory or the amount of machinery available. While fixed input may not directly determine the output level, it can indirectly affect it by placing limitations on the production capacity. For example, if a factory has a fixed input of a limited number of machines, the level of output that can be produced will be limited by the capacity of those machines. Therefore, fixed input can be relevant in determining the level of output.
