(b) A random sample of 8 notebook computers with the N1 processor is selected and the prices (in HK$) of these computers are listed below: 7500 9700 14480 8899 6299 12499 13290 8799 i. Construct a 95% confidence interval for the mean price of all notebook computers with the N1 processor. State any assumption (s)/approximation(s) used and inter- pret your result. ii. Determine the sample size required if we want to be 95% confident that the error of our estimate is at most HK$750. State any assumption(s) / approximation(s) used