troubleshooting Question

p-value of observation

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zhshqzyc asked on
Math / Science
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Can you explain the example?

In the above example we thus have:

null hypothesis (H0): fair coin; P(heads) = 0.5
observation O: 14 heads out of 20 flips; and
p-value of observation O given H0 = Prob(= 14 heads or = 14 tails) = 0.115.


I am not sure how to get 0.115? Thanks.
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