33. No Calculator: A television network must air 16 minutes of commercials during a 1 hour show. All commercials aired on this network are either 30 seconds or 45 seconds. The network would like to run
exactly 24 commercials during a certain 1 hour program. Which of the following systems could be used to
determine the number of 30 second commercials, x, and the number of 45-second commercials, y, that it
should air during this program?

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?