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Unformatted text preview: groups). Similarly the number of no answers is Y plus 3N. This gives the two equations a) and b).] #14. The sample size was probably very small, like 2 or 4, because it is very unlikely that actually half of all college students believe more homework should be assigned in all classes. #17. You would expect to see the responses from the library group to be considerably larger than the responses from the party group, because those in the library group are studiers and those at the party are probably not. Note: As usual, material inside [ ] need not be part of the student's answer, but in fact explanations are asked for in #14 and #17. In #9, the problem does not ask the student to show any work, so a bare answer of 31 would be acceptable....
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 Spring '08
 Irwin

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