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The Normal Distribution

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Question 37

The heights of a specific species of plant are normally distributed. 20% of the plants are shorter than 15 cm. 10% of the plants are taller than 25 cm.

Find the mean and standard deviation of the heights of the plants.

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The Normal Distribution Questions

  1. A Level
  2. /Maths
  3. /The Normal Distribution

Practise Edexcel A Level Maths The Normal Distribution with exam-style questions for A Level Maths. 439 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank