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(Solution) - According to the Bureau of Transportation statistics on time performance by

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According to the Bureau of Transportation statistics, on-time performance by the airlines is described as follows:
Action % of Time
On time ........................70.8
National Aviation System delay ..............8.2
Aircraft arriving late .....................9.0
Other (because of weather and other conditions) ........12.0
Records of 200 flights for a major airline company showed that 125 planes were on time; 40 were delayed because of weather, 10 because of a National Aviation System delay, and the rest because of arriving late. At ? = 0.05, do these results differ from the government?s statistics?
Perform these steps.
a. State the hypotheses and identify the claim.
b. Find the critical value.
c. Compute the test value.
d. Make the decision.
e. Summarize the results.
Use the traditional method of hypothesis testing unless otherwise specified.


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