12950.05 R 10 The organisers of a large sporting competition believe that 15% of the athletes involved have taken a banned performance-enhancing substance. A journalist suggests that the number is more than 15%. The organisers wish to investigate the journalist’s claim. A random sample of 20 athletes is taken and tested for the banned substance. Six of the athletes in the sample are found to have taken the banned substance. Test the journalist’s claim at the 5% level of significance. [9] 12950.05 R 12950.05 R THIS IS THE END OF THE QUESTION PAPER BLANK PAGE DO NOT WRITE ON THIS PAGE 12950.05 R BLANK PAGE DO NOT WRITE ON THIS PAGE Permission to reproduce all copyright material has been applied for. In some cases, efforts to contact copyright holders may have been unsuccessful and CCEA will be happy to rectify any omissions of acknowledgement in future if notified. Examiner Number DO NOT WRITE ON THIS PAGE 12950.05 R For Examiner’s use only Question Number Marks 1 2 3 4 5 6 7 8 9 10 Total Marks Sources: All images ©CCEA