The retail price of 8 laptops along with their corresponding processor speeds in gigahertz are given in the following table: Speed (gigahertz) 2.0 1.6 1.8 1.2 1.4 1.0 1.6 2.0 Price (Tk. Thousands) 80 60 70 40 50 30 65 75 a. Determine the slope coefficient B1 for the regression of Price of laptop given Speed. Answer rounded to three decimal places. b. Determine the y-intercept Bo for the regression of Price of laptop given Speed. Answer rounded to two decimal places. c. Estimate the price of a laptop if it's processor speed is 2.2 gigahertz. Answer rounded to two decimal places. Thousand Tk. d. What percentage of the variation in Price is explained by the regression model? Answer either in percentage or as a decimal (eg: 15.25%, or 0.1525) Save