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4.2 Statistical distributions (A-level only)

4.2 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]
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4.2 Statistical distributions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.2 Statistical distributions (A-level only)

328 exam-style questions on WJEC A Level Maths 4.2 Statistical distributions (A-level only), covering 4.2.1 Statistical distributions (A-level only), 4.2.2 Statistical distributions (A-level only), and 4.2.3 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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