Mathematics, 25.11.2021 06:40 NikolaiSolokov

Suppose that a market research firm is hired to estimate the percent of adults living in a large city who have cell phones. Three hundred randomly selected adult residents in this city are surveyed to determine whether they have cell phones. Of the 300 people sampled, 274 responded yes - they own cell phones. Using a 95% confidence level, compute a confidence interval estimate for the true proportion of adult residents of this city who have cell phones.

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Suppose that a market research firm is hired to estimate the percent of adults living in a large cit...