A researcher wishes to estimate the proportion of adults in…
A researcher wishes to estimate the proportion of adults in the city of Darby who are vegetarian. In a random sample of 1423 adults from this city, the proportion that are vegetarian is 0.085. Find a 90% confidence interval for the proportion of all adults in the city of Darby that are vegetarians.
Read DetailsWeb crawlers need to estimate the frequency of changes to We…
Web crawlers need to estimate the frequency of changes to Web sites to maintain a current index for Web searches. Assume that the changes to a Web site follow a Poisson process with a mean of 6 days. Let a random variable X denote the time (in days) until the next change. What is the probability that the next change occurs in less than 4.5 days?
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