Dr. Chen is studying the relationship between the elevation of weather stations and the average daily temperature recorded during the summer months.
Suggest a suitable null and alternative hypothesis for a two-tail test.
Dr. Chen takes a sample of 12 stations and finds a product moment correlation coefficient of -0.59.
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.