TABLE C-2 Probabilities of k 4-Mutation Samples in Institution F

k = 0 1 2 3 4 5 6 7 8
Probability 0.0003 0.0045 0.0276 0.0955 0.2058 0.2826 0.2415 0.1174 0.0248

This table shows that the chance of Institution F having ended up with seven or eight of the eight (++++) samples is (0.1174 + 0.0248) = 0.1422, or about 1/7. Therefore, while the observed data showing that seven of the eight (++++) samples appeared in Institution F is not completely typical, it also could hardly be considered extreme.



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