Question: on 3 (4 + 2 = 6 marks) A quality control inspector takes a random sample of 25 cartons from a shipment and finds that

on 3 (4 + 2 = 6 marks) A quality control inspector takes a random sample of 25 cartons from a shipment and finds that the 25 cartons have an average weight of 46 kg and a sample standard deviation of 1.8 kg. Construct a 95% confidence interval for the true average weight of a carton of biscuits

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