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4.2 Statistical distributions (A-level only)

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Question 5

The heights of sunflower plants in a nursery are normally distributed with a mean of 160 cm and a standard deviation of 5 cm.

Find the probability that the height of a randomly selected sunflower is:

a.

More than 170 cm

[1]
b.

Less than 150 cm

[1]
c.

Between 150 cm and 170 cm

[1]
Markscheme

4.2 Statistical distributions (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.2 Statistical distributions (A-level only)

324 exam-style questions on WJEC A Level Maths 4.2 Statistical distributions (A-level only), covering 4.2.1 Statistical distributions (A-level only), 4.2.2 Statistical distributions (A-level only), and 4.2.3 Statistical distributions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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