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Unformatted text preview: c. Find a 99% confidence interval for the true proportion of all bloggers who do not limit access to their blogs. d. Compare the intervals in (a) and (c). e. Find a 99% confidence interval for the true proportion of all bloggers that do limit access to their blogs. f. Compare the intervals in (c) and (e). 4. We are interested in estimating, with 80% confidence, the true proportion of bloggers who provide some variant of their real name, within 3%. a. How many bloggers would we need to survey in order to accomplish this? b. Say we suspect, based on a pilot study, that the proportion of bloggers that reveal some variant of their true identity is around 20%. Now how many bloggers would we need to survey?...
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 Spring '07
 MELutz
 Statistics, Standard Deviation

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