You are interested in the effects of different toys as well as the gender on schoolchildren's aggressive behavior. You recruit 500 schoolchildren and randomly assign them to play in a room with either toy guns or stuff animals for five minutes. You also measure their gender (male, female). After that, you put a bobo doll in the room and leave the room. With a hidden camera, you observe how many times each participant punches the bobo doll in the following five minutes. Below are the average numbers of aggressive behavior observed in each condition.

	Toy Guns	Stuff Animals
Male	12	5
Female	5	12

1. Is there a main effect of toy type on aggressive behavior? Interpret the result. 2. Is there an interaction between toy type and gender on aggressive behavior? Interpret the result.