Final answer:
The statement "Either Jean or her intern assists at the clinic" requires additional context to determine its truthfulness. However, the sentence is grammatically correct, using "either... or..." appropriately.
Step-by-step explanation:
The given sentence "Either Jean or her intern assists at the clinic" is a statement that implies one of two people, Jean or her intern, provides assistance at a clinic. To determine whether the statement is true or false, we would need additional information about the actual situation at the clinic. Without that context, we cannot assert the truth value of the statement. However, if the question is asking whether the sentence is grammatically correct, the answer would be that the sentence is grammatically sound as it correctly uses "either... or..." to indicate that one of the two subjects is performing the action.