Final answer:
The statement is False because the data does not support an exponential distribution with an average rainfall duration of 2.615 hours.
Step-by-step explanation:
The student's statement is False. In the given question, the data suggests that an exponential distribution with a mean value of 2.615 hours is a good model for rainfall duration. This means that the average duration of rainfall is 2.615 hours. Therefore, the statement in question is false because the data does not support an exponential distribution with an average duration of 2.615 hours.