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2.4 N: Statistical distributions

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Question 7

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.

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Markscheme

2.4 N: Statistical distributions Questions

  1. A Level
  2. /Maths
  3. /2.4 N: Statistical distributions

390 exam-style questions on AQA A Level Maths 2.4 N: Statistical distributions, covering 2.4.1 Discrete distributions and the binomial, 2.4.2 The Normal distribution (A-level only), and 2.4.3 Selecting an appropriate distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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