Question

Repeat Problem 10.14 (a), assuming that the population variances from developed and emerging countries are not equal. Compare these results with those of Problem 10.14 (a).
Pooled-Variance t Test for the Difference Between Two Means 
(assumes equal population variances) 
Data 
Hypothesized Difference 
0 
Level of Significance 
0.05 
Population 1 Sample 
Sample Size 
15 
Sample Mean 
21.9 
Sample Standard Deviation 
25.83062966 
Population 2 Sample 
Sample Size 
15 
Sample Mean 
11.83333333 
Sample Standard Deviation 
7.74058568 
Intermediate Calculations 
Population 1 Sample Degrees of Freedom 
14 
Population 2 Sample Degrees of Freedom 
14 
Total Degrees of Freedom 
28 
Pooled Variance 
363.5690 
Standard Error 
6.9625 
Difference in Sample Means 
10.0667 
t Test Statistic 
1.4458 
Two-Tail Test 
Lower Critical Value 
-2.0484 
Upper Critical Value 
2.0484 
p -Value 
0.1593 
Do not reject the null hypothesis 


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  • CreatedJuly 16, 2015
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