Biology and Environmental Science Farms across the country have old agricultural chemicals stored in deteriorating containment vessels that pose a threat to humans. The U.S. Department of Agriculture has started a program to clean up and properly dispose of these unusable chemicals. A sample of farms was randomly selected, and the amount of DDT still stored on each farm was recorded. The data (in kg) are given in the following table.
Assume the underlying distribution of stored DDT is continuous.
a. Use the sign test with a = 0.01 to determine whether there is any evidence that the median amount of stored DDT on farms is greater than 2.0 kg.
b. Find the p value associated with this test.