say they approve of the way the mayor is doing their job.  If we wish to construct a 90% confidence interval for the true proportion of adults in this city who would say they approve, what is the appropriate margin of error? (Give your numeric response to at least 3 decimal places.  Give only your numeric response, and not any extra characters or

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Suppose we wish to estimate the population proportion of adults in a large city who approve of the way the mayor is doing their job.  In a random sample of 1200 adults in this city, 490 say they approve of the way the mayor is doing their job.  If we wish to construct a 90% confidence interval for the true proportion of adults in this city who would say they approve, what is the appropriate margin of error?

(Give your numeric response to at least 3 decimal places.  Give only your numeric response, and not any extra characters or symbols.)

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Where did you get the 9.408 from? Is it not supposed to be 0.408?

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