An estate agent believes there is a positive correlation between the size of a house's garden and its selling price.
She calculates the product moment correlation coefficient for a random sample of 25 houses and obtains r=0.352r = 0.352r=0.352.
Carry out a suitable test to investigate the estate agent's belief at a 5% level of significance.
State clearly
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.