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4.6 Statistical hypothesis testing (A-level only)

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Question 28

Davina wants to test to see if there is a correlation between the number of letters in someone's name and their salary.

She calculates the product moment correlation coefficient between these two variables for a random sample of 40 people and obtains r=−0.289r = -0.289r=−0.289

Carry out a suitable test to investigate Davina'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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