In Exercises 5-20, find the (a) mean , (b) median , (c) mode , and (d) midrange for the given sample data. Express answers with the appropriate units of measurement. Then answer the given questions . 17. JFK to LAX Flight Delays Listed below are the arrival delay times (in minutes) of randomly selected American Airline flights from New York's JFK airport to Los Angeles (LAX). Negative values correspond to flights that arrived early before the scheduled arrival time, and positive values represent lengths of delays. Based on these very limited results, what do you conclude about the on-time performance of American Airlines? (The data are from the Bureau of Transportation, and more data are listed in Data Set 15 in Appendix B.) −15 −18 −32 −21 -−9 −32 11 2
In Exercises 5-20, find the (a) mean , (b) median , (c) mode , and (d) midrange for the given sample data. Express answers with the appropriate units of measurement. Then answer the given questions . 17. JFK to LAX Flight Delays Listed below are the arrival delay times (in minutes) of randomly selected American Airline flights from New York's JFK airport to Los Angeles (LAX). Negative values correspond to flights that arrived early before the scheduled arrival time, and positive values represent lengths of delays. Based on these very limited results, what do you conclude about the on-time performance of American Airlines? (The data are from the Bureau of Transportation, and more data are listed in Data Set 15 in Appendix B.) −15 −18 −32 −21 -−9 −32 11 2
Solution Summary: The author analyzes the arrival delay times of American airlines from New York JFK airport to Los Angeles.
In Exercises 5-20, find the (a) mean, (b) median, (c) mode, and (d) midrange for the given sample data. Express answers with the appropriate units of measurement. Then answer the given questions.
17. JFK to LAX Flight Delays Listed below are the arrival delay times (in minutes) of randomly selected American Airline flights from New York's JFK airport to Los Angeles (LAX). Negative values correspond to flights that arrived early before the scheduled arrival time, and positive values represent lengths of delays. Based on these very limited results, what do you conclude about the on-time performance of American Airlines? (The data are from the Bureau of Transportation, and more data are listed in Data Set 15 in Appendix B.)
−15 −18 −32 −21 -−9 −32 11 2
Definition Definition Number of subjects or observations included in a study. A large sample size typically provides more reliable results and better representation of the population. As sample size and width of confidence interval are inversely related, if the sample size is increased, the width of the confidence interval decreases.
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