Question: Chopped lettuce is sold in bags nominally containing 100 grams. The weight, X'grams, of chopped lettuce, delivered by the machine filling the bags, may

Chopped lettuce is sold in bags nominally containing 100 grams. The weight,

Chopped lettuce is sold in bags nominally containing 100 grams. The weight, X'grams, of chopped lettuce, delivered by the machine filling the bags, may be assumed to be normally distributed with mean and standard deviation 4. (a) Assuming that = 106, determine the probability that a randomly selected bag of chopped lettuce: (1) weighs less than 110 grams; (ii) is underweight. (b) Determine the minimum value of so that at most 2 per cent of bags of chopped lettuce are underweight. Give your answer to one decimal place. (3) (3)

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