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Conducting a Hypothesis Test Using Proportions

Conducting a Hypothesis Test Using Proportions. Note: a proportion is the same as the percentage of the population. Formula for the test value for proportions:. ( X – µ ). ( X – np ). z =. or. σ. √ npq. Where:. µ =. np. σ =. √ (npq). q =. 1 – p.

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Conducting a Hypothesis Test Using Proportions

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  1. Conducting a Hypothesis Test Using Proportions

  2. Note: a proportion is the same as the percentage of the population

  3. Formula for the test value for proportions: ( X – µ ) ( X – np ) z = or σ √npq Where: µ = np σ = √(npq) q = 1 – p

  4. Steps for Hypothesis Test For proportions State the null and alternative hypotheses (using p) 1) 2) Find the critical value(s) using z-table 3) Find the mean and standard deviation (Round to 2 decimals) 4) Compute the test value 5) Make the decision to either “reject the null” or “fail to reject the null”

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