QUESTION TEXT: All of the students at Harrison University…
QUESTION TYPE: Must be True
FACTS:
- All of the Harrison students live at either Pulham or Westerville.
- A small fraction of the classes at Harrison are night classes.
- 38% of Harrison students take at least one night class.
- Only 29% of Harrison students living in Westerville take at least one night class.
ANALYSIS: Looking at the facts, it looks like we’ll get an answer about what is true for some or all of a group of people. Every one of our facts deals with a specific portion of something being a certain way.
We learn that everyone either lives in Pulham or Westerville. That means that 38% of people who live in either Pulham or Westerville are taking a night class. Because Westerville is below that average, Pulham must be higher than the 38% average. This is true no matter how many students are in each residence.
___________
- CORRECT. See above.
- This isn’t necessarily true. It could be that Pulham has far fewer students in total, but a higher proportion of its students take night classes.
- We don’t know this. We just know that Westerville has a lower percentage of night class students.
- We really don’t know anything about who takes more than one night class. Everything we have tells us who takes at least one.
- We don’t have anything to base this on. We know that 38% of students take at least one night class, but they’re probably in several day classes as well.
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