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Hi, I would to know how to go about this question: The weight, in grams of Italian grated cheese in cartons may be assumed to

Hi, I would to know how to go about this question:

The weight, in grams of Italian grated cheese in cartons may be assumed to be normally distributed with mean u, and standard deviation 1.6. From a random sample of 64 such cartons, the mean weight of grated cheese per carton is found to be 80.8 grams. Construct a 95% confidence interval for the mean.

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