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.
Practise Edexcel A Level Maths Hypothesis Testing for Zero Correlation with exam-style questions for A Level Maths. 52 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
