Question 6 a and b please

6. An engineer testing the transmitter for a new radio station measures the radiated power levels (uW /m2) at various distances in kilometers from Exponential Power the transmitter. From the data she constructs an exponential regression Regression Regression model and a power regression model as shown to the right. (x-distance ranges from 100 to 400, y-power level) y = ab* y = ax a) Which regression model fits the data best? Why? [1 marks] a = 333.05 a = 2014.7 b = 0.787 b= -2.004 12 = 0.8802 r* = 0.9997 b) Use the appropriate equation to determine the radiated power level at 500 m from the transmitter. [2 marks]