Final answer:
A person is restricted in his/her ownership based on industry-specific regulations designed to prevent monopolies and maintain competition, like those set by the FCC for broadcasting outlets, or the hypothesis test used by a broker to verify stock ownership rates among families.
Step-by-step explanation:
A person is considered restricted if he/she owns a significant percentage of a brokerage firm that could assert control or significant influence over the firm. However, the question seems to merge concepts from both stock ownership among families and restrictions on ownership of broadcasting outlets.
When it comes to media, for instance, the Federal Communications Commission (FCC) has set limits such as a cap where a single entity may not reach more than 35 percent of U.S. households nationally through TV station ownership. '
Within local markets, these restrictions are even tighter, and the same company may not own multiple major broadcasting platforms to prevent a monopoly.
On the side of stocks, a broker's survey aiming to verify if 48.8 percent of families own stock—as indicated by a New York Times Almanac survey—is subject to a hypothesis testing process to determine accuracy. Overall, restrictions in ownership exist to encourage competition and prevent monopolies in various industries.