Chick-fil-A gets it right. Which fast-food chain fills orders most accurately at the drive-thru window? The Quick Servcie Restaurant magazine drive-thru study involved a total of 7594 visits to restaurants in the 25 largest fast-food chains in all 50 states. All visits occured during the lunch hours of 11:00 A.M. to 2:30 P.M. or during the dinner hours of 4:00 to 7:00 P.M. During each visit, the researcher ordered a maint item, a side item, and a drink. One item was left off of each order; for example, a field researcher could order a burger with no pickles. After recieving the order, all the food and drink items were checked for accuracy. ANy food or drink item recieved that was not exactly as ordered resulted in the order being classified as inaccurate. Also included the measurement of accuracy were condiments asked for, napkins, straws, and correct change. Any errors in these resulted in the order being classified as inaccurate. Chick-fil-A had the fewest inaccuracies, with only 14 of 196 orders classified as inaccurate. What proportion of orders are filled accurately by Chick-fil-A? (Use 95% confidence). STATE: PLAN: SOLVE: CONCLUDE:
Chick-fil-A gets it right. Which fast-food chain fills orders most accurately at the drive-thru window? The Quick Servcie Restaurant magazine drive-thru study involved a total of 7594 visits to restaurants in the 25 largest fast-food chains in all 50 states. All visits occured during the lunch hours of 11:00 A.M. to 2:30 P.M. or during the dinner hours of 4:00 to 7:00 P.M. During each visit, the researcher ordered a maint item, a side item, and a drink. One item was left off of each order; for example, a field researcher could order a burger with no pickles. After recieving the order, all the food and drink items were checked for accuracy. ANy food or drink item recieved that was not exactly as ordered resulted in the order being classified as inaccurate. Also included the measurement of accuracy were condiments asked for, napkins, straws, and correct change. Any errors in these resulted in the order being classified as inaccurate. Chick-fil-A had the fewest inaccuracies, with only 14 of 196 orders classified as inaccurate. What proportion of orders are filled accurately by Chick-fil-A? (Use 95% confidence).
STATE:
PLAN:
SOLVE:
CONCLUDE:
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