For the following questions, determine whether to use a parametric or non-parametric test (look at assumptions or test for normality). Perform the hypothesis testing in R and write down the results and the R commands you used. Draw the distribution with the critical values. Where needed perform tests at=0.05. Make conclusions using both the p-value and test statistic.Underline your answers.

B) You are asked to test whether pollution levels in a nearby pond are reduced by stopping industrial waste dumping. Here the values of pollution at each site:

With dumping (before): 214, 159, 169, 272, 103, 179, 200, 149, 132, 148, 194, 104, 219, 119, 234

Without dumping (after): 159, 135, 141, 101, 102, 168, 62, 167, 174, 159, 66, 118, 181, 171, 112

-First state the null and alternative hypothesis.

-Does stopping waste dumping decrease levels of pollution in the pondassume the datais normally distributed)?

-Does stopping waste dumping decrease levels of pollution in the pondassume the datais not normally distributed)?

-Plot both the With dumping and Without dumping values in different colors and symbols on the same plot. Label both axes.