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Repeat Problem 10 14 a assuming that the population variances from

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

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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