Skip to content

Course home

3.1 The Normal Distribution

3.1 The Normal Distribution

MediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253
Question 37

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%.

[4]
Markscheme

3.1 The Normal Distribution Questions

  1. A Level
  2. /Maths
  3. /3.1 The Normal Distribution

79 exam-style questions on Edexcel A Level Maths 3.1 The Normal Distribution. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank