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4. The Snack Pack of potato chips is advertised to weigh 3.5 oz. The weights are...

4. The Snack Pack of potato chips is advertised to weigh 3.5 oz. The weights are normally distributed with mean 3.5 oz and standard deviation 0.2 oz. For a Snack Pack of potato chips selected at random, find the probability a) it weighs less than 3.0 oz. (10 pts) b) it weighs more than 3.7 oz. (10pts)

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