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4) A manufacturing company measures the weight of boxes before shipping them to the customers. If the boxes weights have a population mean of 150

4) A manufacturing company measures the weight of boxes before shipping them to the customers. If the boxes weights have a population mean of 150 kg and a population standard deviation 44 kg, based on a sample size of 69 boxes, approximate the probability that the average weight of the boxes will be less than 168 kg. [10 marks]

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