Amarin Corp Plc (AMRN)

[VuBru]

FWIW - It is arbitrary. A famous biostatistician (Frank Harrell) told me once that the only reason p<.05 was chose as the cutoff for statistical significance had to do with a well-known early statistician who wrote a stats book and did not want to have to pay royalties to re-use previously published significance tables. So, he just created his own table that only included one p value level (p of .05).