An animated biologist in need of money is trying to see if he can get frogs to sing. Randomly sampling 20 frogs in a nearby swamp, 20 frogs in a swamp 2 km away, and 20 frogs in a swamp 20 km away, he measures each frog's pitch level. In testing to see if the closest frogs have a different average pitch level than the frogs further away, what test would you use?
The question is choose the appropriate analysis and address the assumptiosns and the hypotheses and scope