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Regression, Correlation and Hypothesis Testing

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Question 65

Will sells cars. He thinks there is a positive correlation between the price of a car and its mileage.

He calculates the product moment correlation coefficient between these two variables for a random sample of 20 cars and obtains r=0.500r = 0.500r=0.500

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

State clearly

  • your hypotheses
  • your critical value
[3]
Markscheme

Regression, Correlation and Hypothesis Testing Questions

  1. A Level
  2. /Maths
  3. /Regression, Correlation and Hypothesis Testing

340 exam-style questions on Edexcel A Level Maths Regression, Correlation and Hypothesis Testing, covering 1.1 Exponential Models, 1.2 Measuring Correlation, and 1.3 Hypothesis Testing for Zero Correlation. Each one has a worked solution and a mark scheme showing where the marks go.

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