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Find the margin of error that corresponds to the given values of n (times) and x (successes) and the degree of confidence: n=1400, x=420, 95%. Go 3...

Find the margin of error that corresponds to the given values of n (times) and x (successes) and the degree of confidence: n=1400, x=420, 95%.  Go 3 decimal places of precision.  Does not want upper or lower limits wants to calculate value for E.

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