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4.3.1 Statistical hypothesis testing (A-level only)

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Question 59

The power W W\,W and current I I\,I in an electrical component are modelled by W=rIkW=rI^kW=rIk, where r r\,r and k k\,k are constants.

a.

Show that this relationship may be written in the form log⁡W=log⁡r+klog⁡I\log W=\log r+k\log IlogW=logr+klogI.

[2]
b.

State the gradient and vertical intercept of a graph of log⁡W \log W\,logW against log⁡I\log IlogI.

[2]
Markscheme

4.3.1 Statistical hypothesis testing (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.3.1 Statistical hypothesis testing (A-level only)

178 exam-style questions on WJEC A Level Maths 4.3.1 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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