A researcher investigates the impact of a particular herbicide, or weed killer,

Question

A researcher investigates the impact of a particular herbicide, or weed killer, on fish who live in a lake near farmland. He has 60 healthy fish. He randomly assigns each fish to either be exposed or not be exposed to the herbicide. The fish exposed to the herbicide showed higher levels of an enzyme associated with cancer. Suppose a statistically significant difference was found in the average enzyme level between the two groups of fish. What conclusion can be drawn from these results? a. There is evidence of association between herbicide and enzyme levels. b. There is evidence of a causal effect of herbicide on enzyme levels. c. The conclusions in a and b are both correct. d. This study does not allow the researcher to make conclusions of association or causal effects on herbicide on enzyme levels.

Explanation / Answer

As the experiment was done

So PArt-c is correct

That is both parts a and b are correct because it not only found association but also causation

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