Question: The weight of certain mushrooms is normally distributed with a mean of 12g and a variance of 5 g2. The heaviest 10% of mushrooms are

The weight of certain mushrooms is normally distributed with a mean of 12g and a variance of 5 g2. The heaviest 10% of mushrooms are considered too large for use by a particular restaurant. What is the weight of the heaviest mushroom that the restaurant would use? The lightest 5% mushrooms are too small to use and hence discarded. What is the minimum weight of mushrooms used?

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