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4.2 Statistical distributions (A-level only)

4.2 Statistical distributions (A-level only)

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Question 119

The time T T\,T minutes taken for a short repair is modelled by T∼U(4,10)T\sim U(4,10)T∼U(4,10). The labour charge in pounds is modelled by C=3T+5C=3T+5C=3T+5.

a.

State the distribution of CCC.

[2]
b.

Find P(C<26)P(C<26)P(C<26).

[2]
c.

Find the mean labour charge.

[1]
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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