A tram starts at an elevation of 423 feet above sea level. The tram stops at a station 2,643 feet above sea level. It then travels another 5,873 feet up to the top of a mountain. How far does the tram need to travel down to return to the starting point?

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?