Amy wants to find out if there is a correlation between daily maximum relative humidity and daily mean pressure.
Suggest a suitable null and alternative hypothesis for a two-tail test.
Amy takes a sample of 14 days and finds a product moment correlation coefficient of -0.55.
Carry out the hypothesis test at the 5% significance level.
178 exam-style questions on WJEC A Level Maths 4.3.1 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.