Eating rice dumplings during the Dragon Boat Festival is a traditional custom of the Chinese nation. On the morning of the fifth day of May, my mother prepared four rice dumplings for Yangyang: one stuffed with sausage and one stuffed with red dates.

Solution: (1) The tree diagram is as shown in Figure (1):

(1)

∴P (eat Both rice dumplings are filled with assorted fillings) = =.

(2) The tree diagram of the simulation test is as shown in Figure (2):

(2)

∴P (eat Both rice dumplings are filled with assorted fillings) = = ,

∵ ≠ ,

∴ This simulation is incorrect.