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Interpret for management the margin of error

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Reference no: EM132918268

A sample of 300 orders for? take-out food at a local pizzeria found that the average cost of an order was ?$29 with s=?$15.

(a) Find the margin of? error, if we use a? 95% confidence? interval, for the average cost of an order.

?(b) Interpret for management the margin of error.

?(c) If we need to be 99?% ?confident, does the confidence interval become wider or? narrower?

?(d) Find the 99?% confidence interval.

Reference no: EM132918268

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