Question

The climbing centre organises a competition for climbers. Each climber has six attempts at climbing a 15-metre wall. To qualify for the final a climber must have a mean time of less than 8 seconds.

Here are Oliver's times, in seconds, for his six attempts.
1. 9.22
2. 8.58
3. 7.79
4. 7.23
5. 8.66
6. 8.14
Does Oliver qualify for the final?
You must show your working.

Answer 1

(9.22 + 8.58 + 7.79 + 7.23 + 8.66 + 8.14)/6 =

49.62/6 = 8.27 seconds/attempt

Oliver does not qualify for the final.