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"For coin tosses both schools of thought work pretty well"

How many coin tosses in a row have to land heads before a frequentist decides that the coin is unfair?

6, if it's a two-sided test.

Explain?

I'm guessing 1 flip to pick Heads or Tails, and then 5 flips to get a 'good' p-value (2^-5 = 0.03125 < 0.05)