I dove into the JS to retrieve the chart data. Here are the chimpanzee's results (converted by me to % of all recorded outcomes). The chart data implies but does not show that no chimps succeeded at >=25. So if you got an impressive 20 correct, chimpanzees might still beat you 0.5% of the time.
0: 0.00%
1: 0.00%
2: 0.00%
3: 0.00%
4: 1.53%
5: 1.15%
6: 1.48%
7: 3.54%
8: 10.67%
9: 19.91%
10: 21.12%
11: 18.22%
12: 9.94%
13: 4.72%
14: 2.74%
15: 1.52%
16: 1.14%
17: 0.64%
18: 0.58%
19: 0.35%
20: 0.26%
21: 0.24%
22: 0.10%
23: 0.10%
24: 0.05%
