The Chunkiest cookie factory changed their manufacturing process. The inspectors sampled 60 10-oz packages with mean 9.90
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Question:
The Chunkiest cookie factory changed their manufacturing process. The inspectors sampled 60 10-oz packages with mean 9.90 oz and a standard deviation of 1.6 oz. The CEO asks what is the lower weight boundary of the middle 50% of package weights.
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