Looking at some data, surprisingly NO.
5 years ago I would have laughed at that myself but the longer the sample the lower the % goes.
You look at some contests on the internet were thousands are involved, these are the types where usually one or two will jump out from the standard deviation but yet to see any. No lucky runs of 70-80%. None.
There's no money risked so it should be even easier.
Where the high % seems to start to diminish is around the 150-400 sample.
65-75% are very possible to around a 100-150 sample.