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Carrying Out a Test for a Population Mean

AP Statistics· difficulty 1/5

A two-sided t-test of H0: mu = 0 yields t = 1.85 with df = 20. The one-tailed area is 0.039.

0 two-sided test

What is the two-sided p-value?

  • A

    0.039

  • B

    0.078

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  • C

    0.961

  • D

    0.020

Explanation

For a two-sided test, p = 2 * (one-tailed area) = 2 * 0.039 = 0.078.

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