Listed below are the mean speeds (km/h) of recent winners of the Tour de France bicycle race. Use these speeds with a 0.05 significance level to test the claim that these recent mean winning speeds are not significantly different from the 27.2 km/h mean winning speed from the first few Tour de France races in the early 20th century.

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40.3 39.6 40.0 39.9 40.9 40.6 41.7 40.8 39.0 40.5 40.3 39.6 39.8 39.9 40.5 40.7 39.6 39.6 41.0 40.2