An experiment was conducted to study water pollution levels for containers of water randomly sampled from a production cooling system when it is fitted with three types of filters. The samples come from four different sources of water, thus these sources are blocked for. The pollution levels in each sample of water were given a score out of 10, where the higher the score, the more pollution was present. The results for this experiment are presented in the table below. The data is not normally distributed. Culinary Recycled Stream Pond Water Water Water Water Filter 1 6 5 6 10 Filter 2 4 6 5 Filter 3 2 3 UT The aim is to determine if the pollution levels differ for the different filter types. a) Test the hypothesis at a 10% level of significance. i) What is the name of the appropriate test to analyse this data? Type in your answer ii) Specify the hypotheses to be tested: Hai MINS H1: lil) Determine the value of the test statistic: (do not round off) iv) State the decision: Since the test statistic is the null hypothesis is at a 1 090 level of