The age and the market value of 12 second-hand cars are recorded.
Suggest a null and alternative hypothesis for a two tailed test to investigate whether there is a correlation between the age of a car and its market value.
The product moment correlation coefficient is calculated to be r=−0.68r = -0.68r=−0.68.
Test your hypotheses at the 1% significance level.
47 exam-style questions on CCEA A Level Maths 4.6.5 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.