A 2003 New York Times/CBS News poll sampled 523 adults who were planning a vacation during the
Question:
a. State the hypotheses that can be used to determine whether a significant change occurred in 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 α = .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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a H 0 p 1 p 2 0 H a p 1 p 2 0 b 141523 2696 27 8147...View the full answer
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Related Book For 
Statistics For Business And Economics
ISBN: 9780538481649
11th Edition
Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
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