Rachelle wants to study the effects of plants on the growth of fish in an aquarium. He prepared five setups. He put varying amounts of the same type of plants in the four aquariums. He did not place plants in the fifth aquarium. In each of the aquarium, he placed two fishes of the same type and size.

Null Hypothesis:
Alternative Hypothesis:
Experimental Set-up:
Control Set-up:

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