Something extremely bogus is going on. Was tested for covid four times today. Two tests came back negative, two came back positive. Same machine, same test, same nurse. Rapid antigen test from BD.
— Elon Musk (@elonmusk) November 13, 2020
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Well, statistically that’s a mean of zero and a sigma of 1. To get a confidence level of 95%, Musk would need to be tested 100 times.
He could certainly afford 100 tests but might not like the testing. In either case, he should be quarantined for 14 days and retested
100 times.