[R] Formula of power.t.test

Xiaorong Chen chenxr at stanford.edu
Wed May 12 23:33:40 CEST 2004


Dear Sir or Madam,

What is the formula for power.t.test(delta=delta, sd=segma, sig.level=0.05, 
power=0.8, type="one.sample", alternative="one.sided")$n?

Thank you very much for the help!

Best,

Xiaorong




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