Module 9 Project T-Test Paper

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Module 9 - Project: t-Test Project
Robert Lindberg
EMBRY-RIDDLE AERONAUTICAL UNIVERSITY
Statistics with Aviation Applications
MATH 211
Mitchell Flatebo

Module 9 - Project: t-Test Project
INTRODUCTION
The data for this research will be based on the following two airlines, Delta Airlines and Southwest Airlines. Taxi-in time officially starts as soon as the aircraft has made a safe landing and has started making its way to the gate. My research question is, Does Delta Air Lines have longer taxi-in times than Southwest Airlines? I predict that Delta Air Lines will have more taxi-in time than Southwest Airlines. This is due to the fact that Delta Airlines operates out of more major hubs than Southwest Airlines.
Populations
My target …show more content…
I can conclude that Delta Airlines has a lower mean taxi-in time than Southwest Airlines. With a 95% confidence interval, the lower limit is -1.6864 and the upper limit is 0.2264 with a standard error of 0.485 along with a sample difference of -0.73. My hypothesis test results contain a T statistic of -1.5054. The degrees of freedom that I encountered measure 192.677 with a P value of 0.933.

Findings
By looking at my results, with the P value 0.933, it is significantly higher than 0.05. The null hypothesis can be rejected. With test statistic being at -1.5054and the P value being at 0.933 it lies in the critical/rejection region.
Discussion
My question was does Delta Airlines have more taxi-in time than Southwest Airlines. There is not enough evidence to show that Delta Air Lines would have a considerable amount more of taxi-in times than Southwest Airlines. The data actually shows that Southwest Airlines have more taxi-in time than Delta Air Lines thus with the P value of 0.933 the null hypothesis has been rejected, and there is exactly no evidence presented that shows Delta Air Lines with higher taxi-in times than Southwest Airlines.

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