(5 marks) (b) A random sample of 8 notebook computers with the N1 processor is selected and the prices (in HK$) of these

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5 Marks B A Random Sample Of 8 Notebook Computers With The N1 Processor Is Selected And The Prices In Hk Of These 1 (86.85 KiB) Viewed 33 times

The answer of b(ii) is 54, please show the steps and
explanation.
(5 marks) (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. (9 marks) 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. (5 marks)