DDT is a pesticide banned in the United States for its danger to humans and anim

Question

DDT is a pesticide banned in the United States for its danger to humans and animals. In an experiment on the impact of DDT, six rats were exposed to DDT poisoning and six rats were not exposed. For each rat in the experiment, a measurement of nerve sensitivity was recorded. The researchers suspected that the mean nerve sensitivity for rats exposed to DDT is greater than that for rats not poisoned. Let 1 be the mean nerve sensitivity for rats poisoned with DDT. Let 1 be the mean nerve sensitivity for rats not poisoned with DDT. The P-value for this test was between 0.05 and 0.01. Which statement is a reasonable conclusion?

There is fairly strong evidence to support a conclusion that the mean nerve sensitivity is greater in rats exposed to DDT than in rats not exposed to DDT.

There isn't much evidence to support a conclusion that the mean nerve sensitivity is greater in rats exposed to DDT than in rats not exposed to DDT.

There are outliers in these data, so we can't rely on the two-sample t test.

This test is unreliable because the populations we're sampling from are heavily skewed.

Explanation / Answer

The answer to this question would be as follows:-

There is fairly strong evidence to support a conclusion that the mean nerve sensitivity is greater in rats exposed to DDT than in rats not exposed to DDT.

This is because the p-value is <0.05 and hence the claim is significant at 0.05 (p-value<a).

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