(Solution Download) What is the sample proportion expecting to travel by airplane in 2003? In 1993?


A2003 New York Times/CBS News poll sampled 523 adults who were planning a vacationduring the next six months and found that 141 were expecting to travel by airplane (NewYork Times News Service, March 2, 2003). A similar survey question in a May 1993 NewYork Times/CBS News poll found that of 477 adults who were planning a vacation in thenext six months, 81 were expecting to travel by airplane.a. State the hypotheses that can be used to determine whether a significant change occurredin the population proportion planning to travel by airplane over the 10-year period.b. What is the sample proportion expecting to travel by airplane in 2003? In 1993?c. Use a  .01 and test for a significant difference. What is your conclusion?d. Discuss reasons that might provide an explanation for this conclusion.

 







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