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This is a $\LaTeX{}$ formula.

This is an HTML example.

This is a text with a footnote1.

This is a CSS box-shadow.

Hypothesis Testing Test Rejects Null Test Fails to Reject Null
Null is True Type I Error Correct decision
Null is False Correct decision Type II Error 
def print_hi(name)
  puts "Hi, #{name}"
end
print_hi('Qiao')
#=> prints 'Hi, Qiao' to STDOUT.

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  1. And here is the definition.

    With a quote!

    ↩