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4.2 Statistical distributions (A-level only)

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Question 85

Race times T T\,T seconds are modelled by a Normal distribution. It is known that P(T<10)=0.16P(T<10)=0.16P(T<10)=0.16 and P(T>11)=0.23P(T>11)=0.23P(T>11)=0.23.

Find the mean and standard deviation of TTT.

[6]
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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)

324 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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