Comm 315 final - Study guides, Class notes & Summaries
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Business Law and Ethics COMM 315 - Concordia/ COMM 315 – Final Bank Questions and Answers 2024/2025.
- Exam (elaborations) • 14 pages • 2024
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COMM 315 – Final Bank Ques
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Statistics for Management and Economics 11e Keller SM TestBank
- Exam (elaborations) • 862 pages • 2022
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Statistics for Management and Economics 11e 
Keller SM 
 
Statistics for Management and Economics 11e 
Keller SM331 
Appendix 13 
A13.1 Equal-variances t-test of µ1 - µ2 
H0: (µ1 - µ2) = 0 
H1: (µ1 - µ2) < 0 
1 2 3 4 5 6 7 8 9 
10 
11 
12 
13 
14 
A B C 
t-Test: Two-Sample Assuming Equal Variances 
This Year 3 Years Ago 
Mean 8.29 10.36 
Variance 8.13 8.43 
Observations 100 100 
Pooled Variance 8.28 
Hypothesized Mean Difference 0 
df 198 
t Stat -5.09 
P(T<=t) one-tail 0.0000 
t Cri...
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