For a sample of 12 observations, a businessman wants to regress the price (in dollar) of the laptop (Y) on the processor's speed (X). The summary results of the observations are given below. Σχ- 19.8...

Extracted text: For a sample of 12 observations, a businessman wants to regress the price (in dollar) of the laptop (Y) on the processor's speed (X). The summary results of the observations are given below. Σχ- 19.8 , ΣΥ-24798, Σχy- 431882, Σχ33.88 , Σγ= 57365692 %3D %3D (a Compute the correlation coefficient and interpret the results. (b) Find the fitted regression line of the price of laptop on processor speed. (c) Find the predicted price of the laptop (y ) for the processor speed x=1.9. (d) Compute the coefficient of determination and comment.