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.
51 exam-style questions on Edexcel A Level Maths 1.3 Hypothesis Testing for Zero Correlation. Each one has a worked solution and a mark scheme showing where the marks go.