Unformatted text preview: The population are the 5,000 sent a survey, the sample are the 815 who would be more likely to donate. The work: The group we care about is the population, that would be all the alumni (see page 8). The list of 123,716 alumni is the sampling frame (see page 58). In terms of page 61, the 5,000 are those “selected for the sample” but includes the nonresponders. Only those who you actually have answers from are in the sample (see page 9). The 815 are simply those that answered. We use them and the sample size to get our estimated proportion (see page 36). Question The sampling frame is: Answer all University alumni the 123,716 the 5,000 the 1,312 For more: The sampling frame is described on page 58. Question The margin of error (for 95%) in this case is: Answer 1/sqrt(123,716) 1/sqrt(5,000) 1/sqrt(1,312) 1/sqrt(815) For more: The formula is on page 42. The sample size comes from question 1 above....
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- Fall '07