Question

1. Super giant slalom, or Super-G, is a skiing event where competitors ski 2.2 km down a slope with an average gradient of 27%. An Olympic skier is training for the next winter’s competition and she would like to reduce the standard deviation between her runs to fewer than two seconds. A sample of seven runs shows a sample standard deviation of 1.679 seconds. At the 5% significance level, was she able to reduce her standard deviation to less than two seconds?

Answer 1

Conclusion: There is no evidence to conclude that she reduced her standard deviation to less than two seconds.