Learn By Doing – Using p-values
The following two hypotheses are tested:
- Ho: The proportion of U.S. adults who oppose gay marriage is roughly 50%.
- Ha: The proportion of U.S. adults who oppose gay marriage is above 50% (i.e., the majority oppose).
Suppose a survey was conducted in which a random sample of 1,100 U.S. adults was asked about their opinions about gay marriage, and based on the data, the p-value was found to be 0.002.
Comment: Throughout this activity use a 0.05 (5%) significance level (cutoff).
This document is linked from Steps in Hypothesis Testing.