$ ruby -d p.rb 1000
0
0.568802833557129
0.00192999839782715
1
0.533818006515503
0.00211405754089355
2
0.537478923797607
0.0022280216217041
3
0.53414511680603
0.00218677520751953
4
0.536468029022217
0.00182414054870605
5
0.534920930862427
0.00270700454711914
6
0.533123016357422
0.0017240047454834
7
0.53983998298645
0.00176405906677246
8
0.542374849319458
0.00335812568664551
9
0.562394857406616
0.00179100036621094
The deviation in the deltas was 0.012126
The mean delta was 0.540174
There is statistical difference