Final answer:
The statement is false, as federal law does not limit the number of hours 16- and 17-year-olds can work when school is in session, though state laws may vary.
Step-by-step explanation:
The statement that a minor 16 or 17 can work no more than 30 hours a week when school is in session is false. Under the Fair Labor Standards Act established in 1938, 16- and 17-year-olds may work unlimited hours in non-hazardous jobs. However, for children aged 14-15, there are limitations on the hours they can work, but once they reach 16, the federal law does not limit the number of hours they can work. Nevertheless, some state laws may differ and impose stricter standards than the federal law, so it is always important to check the regulations specific to one's state.