In Testing the Difference Between Two Population Means for Which

question 90

Multiple Choice

In testing the difference between two population means for which the population variances are unknown and not assumed to be equal,two independent samples are drawn from the populations.Which of the following tests is appropriate?

• A)z-test
• B)pooled-variances t-test
• C)unequal variances t-test
• D)None of these choices.

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