Andrew entered a swimming race.
The times in this race are normally distributed with a mean time of 57 seconds and a standard deviation of 8 seconds.
Andrew swam the race in a time of 70 seconds.
Calculate the standardised score for Andrew.
Ravina swam in the same race.
Her standardised score is 1.8.
Which of Andrew or Ravina did better in the race?
Give a reason for your answer.
Practise AQA GCSE Statistics Standardised Scores with exam-style questions for Foundation and Higher tier. 6 questions, matched to the AQA GCSE Statistics (8382) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.