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. The SSATL scores are summarized below.

	American	Japanese
Sample Size	211	200
Sample Mean SSATL Score	65.75	79.83
Sample Standard Deviation	11.07	6.41

Which test should be used?

a. Pooled-variance t-test for the difference between two means

b. Z-test for the difference between two proportions

c. Z-test for the difference between two means

d. Matched pairs t-test

Answer 1

Asa population standard deviation is unknown we can't use z test.

Therefore, above problem can be solved using t test.

The groups are randomly selected of japanese ans Americans.

Therefore they are independent.

Therefore, above problem we can solved using

a. Pooled-variance t-test for the difference between two means

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