Nannies who work for celebrities. The International Nanny Association reports that in a sample of 528 in-home child care providers (nannies), 20 work for either a nationally known, a locally known, or an internationally known celebrity (2011 International Nanny Association Salary and Benefits Survey). Use Wilson’s adjustment to find a 95% confidence interval for the true proportion of all nannies who work for a celebrity. Interpret the resulting interval.
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