Before she started hiking, jessica’s altimeter read +250 meters. she climbed 200 meters and reached point a, which is at an elevation of 450 meters above sea level. she then descended 500 meters to point b, which is at an elevation of 50 meters below sea level. the reading on the altimeter at point a was meters. the reading on the altimeter at point b was meters.

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?