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3.5 Finding the mean and standard deviation

3.5 Finding the mean and standard deviation

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Question 15

The time, T T\,T minutes, taken to commute to work is normally distributed with a standard deviation of 6.4 minutes. Given that P(T<45)=0.7P(T < 45) = 0.7P(T<45)=0.7.

Find the mean commute time.

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Markscheme

3.5 Finding the mean and standard deviation Questions

  1. A Level
  2. /Maths
  3. /3.5 Finding the mean and standard deviation

48 exam-style questions on Edexcel A Level Maths 3.5 Finding the mean and standard deviation. Each one has a worked solution and a mark scheme showing where the marks go.

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