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Mathematics, 05.05.2020 15:24 njones58emailtjcedu

A TV news magazine states that the results of their study of the average number of complaints per week about
garbage pick-up in the city had a margin of error of +/- 2.1 at the 95% confidence level based on their
examination of data from a random sample of 30 weeks over the past 3 years. For this statement to be true,
what was the approximate population standard deviation that the organization must have used to compute the
margin of error?

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