James wants to know if there is a correlation between the number of hours students spend on a revision app and their final test scores.
Suggest a suitable null and alternative hypothesis for a two-tail test.
James takes a sample of 15 students and finds a product moment correlation coefficient of 0.68.
Carry out the hypothesis test 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.