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Elementary,Middle School,High School,College,University,PHD
| Teaching Since: | May 2017 |
| Last Sign in: | 398 Weeks Ago, 3 Days Ago |
| Questions Answered: | 66690 |
| Tutorials Posted: | 66688 |
MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
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 health care sector 33% said they were understaffed, and in the education sector 28% said they were understaffed (USA Today. January 11. 2010). Sup-pose 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.
b. Assuming the sample sire will be the same in each industry. how large would the sample need to be to ensure that the margin of error is .05 or less for each of the three confidence intervals?
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