Final answer:
The statement 'R must be assigned to floor 6' is true as it directly complies with the restrictions provided for the assignment of students to dormitory floors.
Step-by-step explanation:
The question involves a logical and quantitative reasoning challenge regarding the assignment of students to different floors in a college dormitory, in accordance with certain restrictions. We are told that P must be assigned to the floor directly above Q, and R must be assigned to floor 6. Given these restrictions, the statement in question 'R must be assigned to floor 6' is indeed True. As the requirement tells us, R has a predefined placement on the sixth floor, and this is confirmed without any conditional or ambiguous language, making it a factual statement based on the provided information.