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4.5.1 Statistical distributions (A-level only)

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Question 79

The rate of oxygen consumption for a specific species of deep-sea bacteria, measured in μmol/h\mu \text{mol/h}μmol/h, is normally distributed with mean 15.415.415.4 and standard deviation 2.82.82.8. A marine biologist collects a random sample of nnn such bacteria. Determine the minimum sample size nnn such that the probability of the sample mean oxygen consumption exceeding 16.5 μmol/h16.5 \, \mu \text{mol/h}16.5μmol/h is less than 1%1\%1%.

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4.5.1 Statistical distributions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.5.1 Statistical distributions (A-level only)

225 exam-style questions on CCEA A Level Maths 4.5.1 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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