Question

There is pesticide banned in the United States for its danger to living things called DDT. In an experiment, 6 mice were exposed to DDT poisoning and 6 mice were not. For each mouse in the experiment, a measurement of their body sensitivity was recorded. The researchers suspected that the mean body sensitivity for mice exposed to DDT is greater than that for mice not poisoned. The data follow: Mice with DDT: 12.207 16.869 25.050 22.429 8.456 20.589 Mice without DDT: 11.074 9.686 12.064 9.351 8.182 6.642 Let mu 1 be the mean body sensitivity for mice given DDT. Let mu 2 be the mean body sensitivity for mice not given DDT. Which of the following is a reasonable conclusion? Question 3 options: There isn't much evidence to support a conclusion that the mean body sensitivity is greater in mice given DDT than in mice not given DDT. This test is unreliable because the populations we're sampling from are heavily skewed. There is fairly strong evidence to support a conclusion that the mean body sensitivity is greater in mice given DDT than in mice not given DDT. There are outliers in these data, so we can't rely on the two-sample t test.

Answer 1