An investigator conducts an experiment with four treatment groups. The response

Question

An investigator conducts an experiment with four treatment groups. The response variable is growth of a plant during the experiment. She performs an F-test. What is the null hypothesis the researcher is testing with the F-test? Choose the correct answer below OA. All plants in all treatment groups have the same growth during the experiment O B. All plants in each treatment group have the same growth during the experiment, but plants in different treatment groups might have different growths. O C. At least one treatment group has a different average growth of plants during the experiment, but not all four necessarily have different mean growths D. All four treatment groups have a different average growth of plants during the experiment. OE. All four treatment groups have the same average growth of the plants during the experiment

Explanation / Answer

Null hypothesis:

All four tretments have the same average group of the plants during the experiment.

Alternative hypothesis:

Atleast one treatment group has different average growth of the plantsduring the experiment

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