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4.2 Statistical distributions (A-level only)

4.2 Statistical distributions (A-level only)

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Question 25

The length L L\,L metres of a steel rod is modelled by L∼N(2.50,0.042)L\sim N(2.50,0.04^2)L∼N(2.50,0.042).

Find

a.

P(L>2.56)P(L>2.56)P(L>2.56),

[2]
b.

P(L<2.44)P(L<2.44)P(L<2.44),

[2]
c.

P(2.44<L<2.56)P(2.44<L<2.56)P(2.44<L<2.56).

[2]
Markscheme

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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