A sample of 250 orders for take-out food at a local pizzeria found that the average cost of an order was $27 with s = $14. (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. (a) Margin of Error = $ (Round to the nearest cent as needed.) ample Clear all Check