10.3 \(P\)-values

In a two-tailed \(t\)-test where \(n=49\), what is the approximate \(P\)-value for the test if:

  1. \(t=-2.14\).
  2. \(t=1.90\).
  3. \(t=3.15\).
  4. \(t=-1.20\).
  5. \(t=-1.59\).
  6. \(t=6.71\).

(Hint: Use the 68--95--99.7 rule.)

How would your answers change if these \(t\)-scores came from a one-tailed test?


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