With 10 questions and four options each, there’s a 5.6% chance he could answer them all incorrectly, so it doesn’t meet the two sigma test. (plus, with less than 20 questions, it’s even more likely that it could be a random result.)
January 24, 2015
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November 09, 2021
With 10 questions and four options each, there’s a 5.6% chance he could answer them all incorrectly, so it doesn’t meet the two sigma test. (plus, with less than 20 questions, it’s even more likely that it could be a random result.)