On an alien planet in which Zorgs (the aliens) only want Zags (one gender), every family continues to have children until they have a Zag. If they have a Zig (another gender), they have another child. If they have a Zag, they stop. What is the proportion of Zags to Zigs on the planet?

For a science project, a high school research team conducted a survey of local air temperatures. based on the results of the survey, the found that the average temperatures were around 10 degrees higher than expected. this result was wrong. the trouble with the survey was that most of the locations were exposed to direct sunlight and located over asphalt or sand, which resulted in higher temperatures than normal. this is a classic example of an error in which phase of inferential statistics?