This question already has an answer here:
The reported discovery of gravitational waves has been put in question by the scientific community:
In any case, the discovery is based on a short segment of two continuous measurements having an approximately matching pattern (see the plot in the link above). My question is if this match could be just a random coincidence.
Consider two people continuously tossing coins in separate rooms. The results are recorded and correlated. At first they are seemingly random, but given time, there is a certain probability that the results would temporarily match. And the longer we observe, the more likely we get similar patterns.
I have observed a real roulette in a casino for the result to be red or black. Just on the second day of my observation the roulette produced 20 reds in a row. Superficially this is highly improbable, but so is the entire reality.
My question is, what is the margin of error in the gravitational waves discovery data from the standpoint of the probabilistic random coincidence that just looks like correlated signals?