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2 Unit AS 2: Applied Mathematics

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Question 110

A wildlife survey records 180 oystercatchers and 120 redshanks at a coastal site. A stratified random sample of 30 birds is to be health-checked, with species used as the strata.

a.

Calculate the number of oystercatchers that should be selected.

[2]
b.

State how many redshanks should be selected.

[1]
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2 Unit AS 2: Applied Mathematics Questions

  1. A Level
  2. /Maths
  3. /2 Unit AS 2: Applied Mathematics

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