Let us go straight to read how the thing was reported in some online resources (boldface is mine).

- The New York Times, April 5[2]:
*``Physicists at the Fermi National Accelerator Laboratory are planning to announce Wednesday that they have found a suspicious bump in their data that could be evidence of a new elementary particle or even, some say, a new force of nature.**...**The experimenters estimate that***there is a less than a quarter of 1 percent chance their bump is a statistical fluctuation**'' - Fermilab Today, April 7[12]
*``Wednesday afternoon, the CDF collaboration announced that it has evidence of a peak in a specific sample of its data. The peak is an excess of particle collision events that produce a W boson accompanied by two hadronic jets. This peak showed up in a mass region where we did not expect one.**...**The significance of this excess was determined to be 3.2 sigma, after accounting for the effect of systematic uncertainties. This means that***there is less than a 1 in 1375 chance that the effect is mimicked by a statistical fluctuation**.'' - Discovery News, April 7[1]
*``If you're a little hazy about the details of Wednesday's buzz surrounding the potential discovery of "new physics" in Fermilab's Tevatron particle accelerator, don't worry, you're not alone. This is a big week for particle physicists, and even they will be having many sleepless nights over the coming months trying to grasp what it all means.**That's what happens when physicists come forward, with observational evidence, of what they believe represents something we've never seen before. Even bigger than that: something we never even expected to see.**...**It is what is known as a "three-sigma event," and this refers to the statistical certainty of a given result. In this case,***this result has a 99.7 percent chance of being correct (and a 0.3 percent chance of being wrong).''** - Jon Butterworth's blob on the Guardian[13]
*``The last and greatest breakthrough from a fantastic machine, or a false alarm on the frontiers of physics?**...**If the histograms and data are exactly right,***the paper quotes a one-in-ten-thousand (0.0001) chance that this bump is a fluke**.''

- ``
**there is more than 99 percent chance their bump is not a statistical fluctuation**''; - ``
**there is more than 99.93% chance that the effect is not mimicked by a statistical fluctuation**''; - ``
**the paper quotes a 99.99% chance that this bump is not a fluke**'',

Giulio D'Agostini 2012-01-02