2. A study was done to test if water turbidities (cloudiness) in a stream were affected by the water flow rate in the stream. 0.5L water samples were collected from streams of varying flow speed, and the water turbitidy was measured in the sample. (a) Write a null and alternate hypothesis about a possible relationship between speed and water turbidity. (b) Construct an appropriate plot to show whether or not such a relationship in (a) exists. (c) Compute an appropriate correlation coefficient between the two variables. (d) Examining any p-values associated with your correlation coefficient, do you believe that such a relationship exists