Week 6 - Group Assignment
Qiana.Reynolds
inferential_statistics_-_sheri.docx
Inferential Statistics
QNT/561
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Running head: BUSINESS RESEARCH PROJECT |
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6
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Inferential Statistics
The Hypothesis being tested is, “Passenger boarding times will be decrease when the bags are free.” And the Null Hypothesis is “There is no difference in boarding times when bags are free.” The data collected for the study was boarding times, with paid luggage, and boarding times, with free luggage. To reject the null hypothesis, there will be a difference between the boarding times.
The Independent variable is whether or not the first two checked bags are free, and the dependent variable is flight boarding times. The data was mined from collected data, both six months in the past and six months in the future. The independent variable data, whether the bags were free or not free, has already been collected.
The t-test was used for averages of two samples, boarding times when baggage is free, and boarding times when baggage is paid. The t-test chosen was the t-test paired. The confidence level alpha is 1, with .05 for a confidence level of 95%. If the P value<alpha, then we reject the null hypothesis. If the P value is >alpha then we fail to reject the null hypothesis. P= 4.16187E-08>1, so the null hypothesis is rejected.
Appendix A
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t-Test: Paired Two Sample for Means |
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Free |
Paid |
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Mean |
9.666666667 |
13.88333333 |
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Variance |
12.97175141 |
12.88446328 |
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Observations |
60 |
60 |
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Pearson Correlation |
-0.041079213 |
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Hypothesized Mean Difference |
0 |
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df |
59 |
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t Stat |
-6.29536021 |
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P(T<=t) one-tail |
2.08094E-08 |
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t Critical one-tail |
1.671093032 |
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P(T<=t) two-tail |
4.16187E-08 |
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t Critical two-tail |
2.000995378 |
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Appendix C
Lind, D., Marchal, W., & Wathan, S. (2014). Statistical techniques in business and economics (16th ed.). New York, NY: McGraw-Hill Irwin.
FreePaid
515
717
1513
1416
612
614
68
1313
1516
713
1010
1012
159
1319
58
1416
79
1318
710
918
158
616
1511
1311
1118
720
619
910
1212
818
515
515
619
89
719
911
513
612
715
1517
1314
712
1519
1512
1510
617
510
1310
1218
918
88
1210
1511
1112
1018
1120
1216
515
515
914
