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2.4.6 Probabilities using the normal distribution (A-level only)

2.4.6 Probabilities using the normal distribution (A-level only)

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Question 15

The time taken to assemble a specific furniture kit is normally distributed with a mean of 140 minutes140\text{ minutes}140 minutes and a standard deviation of 25 minutes25\text{ minutes}25 minutes.

Find the time by which 95% of customers complete the assembly.

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2.4.6 Probabilities using the normal distribution (A-level only) Questions

  1. A Level
  2. /Maths
  3. /2.4.6 Probabilities using the normal distribution (A-level only)

147 exam-style questions on OCR A Level Maths 2.4.6 Probabilities using the normal distribution (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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