The Public Utility Commission in a southern state is interested in describing the relationship between household monthly utility bills and the size of the house. A recent study of 30 randomly selected household resulted in the following regression results:

Use the above output for answering the following questions: Part a)(8 marks)

i) ii) iii) iv)

Interpret the slope of the regression line. Write down the estimated linear regression line. What is the value of coefficient of determination? Interpret this value What is the value of the coefficient of correlation? Interpret this value.