The couch in your living room is old. you decide to recover the couch cushions with new fabric instead of buying a new couch. the length of one cushion is 2 feet. the width is 2.5 feet. the height of is 0.5 feet. the fabric costs per $2.50 per square foot. how much will it cost to recover each cushion?

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?