1 . Water pollution is one of the environmental issues in Malaysia for more than two decades. Some highly polluted Malaysian rivers are Juru River in Penang, Skudai River in Johor, and Klang River in Selangor. The common causes of water pollution are industrial discharge, agricultural and urban runoff. Furthermore, water pollution may result in shutdown of the water supply that will affect millions of households especially in Selangor and Kuala Lumpur. You are working with the Department of Environmental (DOE), Malaysia and given a task to study the concentration of TWO (2) chemicals in FIVE (5) different rivers. Based on the dataset from the Environmental Quality Report available at https://enviro2.doe.gov.my/ekmc/, carry out statistical analyses by considering TWO (2) significance levels and state all assumptions. Explain your findings