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4.2.2 Statistical distributions (A-level only)

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Question 4

The weight of a bag of sugar, WWW, is modeled by a normal distribution with a standard deviation of 12 g. It is known that P(W<490)=0.2P(W < 490) = 0.2P(W<490)=0.2.

Calculate the mean weight of the bags of sugar.

[4]

4.2.2 Statistical distributions (A-level only) Questions

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