A sports scientist expects resting pulse rate to decrease as weekly training time increases. For a random sample of 13 athletes, r=−0.604r=-0.604r=−0.604. The lower-tail critical values are -0.4762 at 5% and -0.6340 at 1%.
Carry out the test at the 5% significance level.
Explain why the evidence is not significant at the 1% level.
308 exam-style questions on WJEC A Level Maths 4.3 Statistical hypothesis testing (A-level only), covering 4.3.1 Statistical hypothesis testing (A-level only) and 4.3.2 Statistical hypothesis testing (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.