Are Japanese managers more motivated than American managers? A randomly selected

Question

Are Japanese managers more motivated than American managers? A randomly selected group of each were administered the Sarnoff Survey of Attitudes Toward Life (SSATL), which measures motivation for upward mobility.

Judging from the way the data were collected, which test would likely be most appropriate to employ?
American Japanese
Sample Size 211 100
Mean SSATL Score 65.75 79.83
Population Std. Dev. 11.07 6.41

A. Paired t Test
B. Pooled-variance t test for the difference between two means
C. Independent samples Z test for the difference between two means
D. Related samples Z test for the mean difference.

Explanation / Answer

Independant samples Z test for the difference between two means

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