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https://kevinrandle.blogspot.com/2015/07/kenneth-arnold-and-null-hypothesis.html?showComment=1437789408987
A Different Perspective: Kenneth Arnold and the Null Hypothesis
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https://milkywaynews.com/guide/cases/kenneth-arnold-sighting
The Kenneth Arnold Sighting: Milky Way News
A private pilot's June 1947 report of nine fast objects near Mount Rainier gave the world the phrase "flying saucer" and started the modern UFO era.
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https://ufologie.patrickgross.org/press/muncieeveningpress27jun1947.htm
ufo - UFOs at close sight: Kenneth Arnold sighting reports in the Press, The Muncie Evening Press,...
ufo - UFOS at close sight: Kenneth Arnold sighting reports in the Press, The Muncie Evening Press, Muncie, Indiana, USA, on page 20, on June 27, 1947.
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https://kevinrandle.blogspot.com/2015/07/kenneth-arnold-and-null-hypothesis.html?m=1
A Different Perspective: Kenneth Arnold and the Null Hypothesis
the null hypothesiskenneth arnolddifferentperspective