The engine size and fuel consumption for 12 different models of cars are recorded.
Suggest a null and alternative hypothesis for a two-tailed test to investigate whether there is a correlation between engine size and fuel consumption.
The product moment correlation coefficient is calculated to be r=0.45r = 0.45r=0.45.
Test your hypotheses at the 5% significance level.
49 exam-style questions on OCR A Level Maths 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.