Background:On the Mythbusters TV show, they investigated whether yawning is contagious (Watch video here. If this doesn't work, use this link). We will analyze the data from the final study, an experiment where visitors to a local flea market (the observational units) were invited to participate in the study and were randomly assigned to be given a "yawn seed" or "no yawn seed" (the explanatory variable). The response variable is whether or not the participant then yawned within a specific time period when isolated. From this study, we want to know whether the long-run probability of yawning after a yawn seed is higher than the long-run probability of yawning without a yawn seed. In other words, was the group that received the yawn seed statistically significantly more likely to yawn than the group that did not receive a yawn seed? In other words, do we have convincing evidence that the probability of yawning is larger with the yawn seed than without.
Goals:
- Investigate a research question that involves comparing two groups on a categorical response through simple numerical and graphical summaries.
- Continue to explore the concept of “statistical significance” and p-values for the scenario of comparing two groups on a categorical variable, with random chance arising from the random assignment process.
- Use the results of a designed experiment and sample data to draw conclusions about a population or process
When you are ready, click Start to begin.
