In Wan Chai Computer Centers in Hong Kong, there are dozens of computer shops selling multiple laptop brands. After a survey in one of them, 10 were selected. The ordered pairs show the speed of each computer's CPU in gigahertz and its price in Hong Kong dollars (1 USD = 7.78 HKD).
(11.8, 14,5002), (11.6, 12,2902), (12.0, 17,5002), (11.6, 16,5002), (11.8, 19,6502), (12.4, 21,0002), (11.2, 7,5002), (11.4, 12,5002), (11.6, 14,6502), (12.0, 18,3502)
a. Determine the regression equation of the sample.
b. Find the intercept and the slope of the equation.
c. Compute the coefficient of determination and interpret its meaning in this specific context.