Create a One-Proportion Test

To create a one-proportion test:
  1. From the Type of test drop-down list, select One proportion.
  2. For the quantity to solve for, select Power.
    Note: To solve for a total sample size, you must select Approximate Z-test or Approximate continuity-adjusted Z-test from the Select a test drop-down list.
  3. Select the test to perform. You can choose from these options:
    • Exact binomial test
    • Exact Z-test
    • Exact continuity-adjusted Z-test
    • Approximate Z-test
    • Approximate continuity-adjusted Z-test
  4. Select the variance estimate for the test. The variance can be based on either the null proportion or the observed sample proportion.
    Note: This option is not available if you are performing an exact binomial test.
  5. Select whether to perform a one-sided test or a two-sided test.
  6. Specify the significance level.
  7. Specify the proportion and the null proportion.
  8. Specify the sample size and whether to allow for fractional sample sizes.