[EX02-187] The Office of Aviation Enforcement

& Proceedings, U.S. Department of Transportation, reported the number of mishandled baggage reports filed per 1000 airline passengers during October 2004. The industry average was 4.02.

Airline Reports Passengers Reports/1000 AirTran 2084 1,148,779 1.81 JetBlue 2295 1,057,510 2.17

••• Remainder of data on Student’s Suite CD-ROM Source: Office of Aviation Enforcement & Proceedings, U.S. Department of Transportation

a. Define the terms population and variable with regard to this information.

b. Are the numbers reported (1.81, 2.17, . . . , 12.21) data or statistics? Explain.

c. Is the average, 4.02, a data value, a statistic, or a parameter value? Explain why.

d. Is the “industry average” the mean of the airline rates of reports per 1000? If not, explain in detail how the 19 airline values are related to the industry average.