Mr. Dotson wants to know if the neighbors on his street
would be interested in a community watch. He surveys
every fourth household on the street and concluded that
70% would be interested.
Determine whether each conclusion is valid.

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?