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4.6 Statistical hypothesis testing (A-level only)

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Question 25

Liam is investigating whether there is a correlation between the daily maximum temperature and the daily sales of hot chocolate at his café.

He collects data for a random sample of 25 days and calculates a product moment correlation coefficient of r=−0.42r = -0.42r=−0.42.

Carry out a suitable test to investigate Liam's belief at a 5% level of significance.

State clearly

  • your hypotheses
  • your critical value
[3]
Markscheme

4.6 Statistical hypothesis testing (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.6 Statistical hypothesis testing (A-level only)

209 exam-style questions on CCEA A Level Maths 4.6 Statistical hypothesis testing (A-level only), covering 4.6.1 Statistical hypothesis testing (A-level only), 4.6.2 Statistical hypothesis testing (A-level only), 4.6.3 Statistical hypothesis testing (A-level only), 4.6.4 Statistical hypothesis testing (A-level only), and 4.6.5 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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