Skip to content

Course home

3.5 Finding the mean and standard deviation

3.5 Finding the mean and standard deviation

MediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445
Question 5

The shelf life of a specific type of fresh bread is normally distributed.

14% of the loaves spoil in fewer than 3 days. 18% of the loaves stay fresh for longer than 7 days.

Find the mean and standard deviation of the shelf life of the bread.

[6]
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.

Question bank