premise: The Beverly Hillbillies had nine seasons.
hypothesis: Mammoth Studios is the generic name used for fictional movie studios in movies , television , books and comic books . The Beverly Hillbillies is an American sitcom originally broadcast on CBS for nine seasons , from September 26 , 1962 , to March 23 , 1971 . The Beverly Hillbillies ranked among the top 20 most-watched programs on television for eight of its nine seasons , twice ranking as the number one series of the year , with a number of episodes that remain among the most-watched television episodes in history .