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Question 3 A statistician is interested in the height of people living in a city. Supposing that the height follows normal distribution with unknown mean

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Question 3 A statistician is interested in the height of people living in a city. Supposing that the height follows normal distribution with unknown mean / and the know variance o, determine the minimum size of random sample must be taken so that the confidence interval for u with confidence coefficient 0.95 and length less than 0.010. (10 marks)

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