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2.5 Statistical Hypothesis Testing

2.5 Statistical Hypothesis Testing

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Question 37

An aerodynamicist, Dr. Sterling, is investigating the relationship between the angle of attack, θ\thetaθ (degrees), and the lift coefficient, CLC_LCL​, of a prototype wing across 42 wind tunnel trials. After processing the experimental data, he calculates the product moment correlation coefficient (PMCC) to be −1.14-1.14−1.14.

Which of the following statements best describes this calculated result?

  • Definitely incorrect
  • Probably incorrect
  • Probably correct
  • Definitely correct
[2]
Markscheme

2.5 Statistical Hypothesis Testing Questions

  1. A Level
  2. /Maths
  3. /2.5 Statistical Hypothesis Testing

316 exam-style questions on OCR A Level Maths 2.5 Statistical Hypothesis Testing, covering 2.5.1 The language of hypothesis testing, 2.5.2 Hypothesis test for a binomial proportion, 2.5.3 Inference and significance level, 2.5.4 Sample mean as a random variable (A-level only), 2.5.5 Hypothesis test for the mean of a normal distribution (A-level only), 2.5.6 Pearson's product-moment correlation coefficient, and 2.5.7 Hypothesis test using Pearson's coefficient (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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