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QUESTION 2 a) Describe the purpose of constructing an interval estimate. (1 mark) b) Determine the 98% interval estimate for the mean population content of

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QUESTION 2 a) Describe the purpose of constructing an interval estimate. (1 mark) b) Determine the 98% interval estimate for the mean population content of lubricant using the sample from 10 containers which are 10.2, 9.7, 10.1, 10.3, 10.1, 9.8, 9.9, 10.4, 10.3 and 9.8 liters. (6 marks)

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