Mathematics, 05.05.2020 19:28 jnsoccerboy7260
1. Pizza for carry-out A sample of 300 orders for take-out food at a local pizzeria found that the average cost of an order was $23. Assume for now that the standard deviation of the population is indeed known and equals $15. Round final answers to 2 decimal places. (a) For a 99% confidence interval find the margin of error for the average cost of an order. (b) Find the 99% confidence interval. (c) Provide an interpretation of the confidence interval. (d) If we only need to be 95% confident, does the confidence interval become wider or narrower
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1. Pizza for carry-out A sample of 300 orders for take-out food at a local pizzeria found that the a...
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