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2.4 N: Statistical distributions

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Question 47

The mass of a certain variety of apple, in grams, is Normally distributed with mean 150 g and standard deviation 10 g.

Find the probability that the mass of a randomly chosen apple of this variety is as described in each of parts (a) to (c). Give each answer to 3 significant figures.

a.

More than 162.5 g

[1]
b.

Less than 137.5 g

[1]
c.

Between 137.5 g and 162.5 g

[1]
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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