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Workers in several industries were surveyed to determine the proportion of workers who feel their industry is understaffed. In the government sector, 37% of the respondents said they were understaffed, in the healthcare sector 33% said they were understaffed, and in the education sector, 28% said they were understaffed (USA Today, January 11, 2010). Suppose that 200 workers were surveyed in each industry. a. Construct a 95% confidence interval for the proportion of workers in each of these industries who feel their industry is understaffed.

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1 of 8We are interested in the confidence interval of the population proportion $p$.

*What is a confidence interval? How can the confidence interval be calculated?*

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