When Conducting Hypothesis Tests for Two Sample Means, the Term $\mu$

question 46

Multiple Choice

When conducting hypothesis tests for two sample means, the term $\mu$ 1 - $\mu$ 2 in the numerator of the formula reduces to zero because

• A) the standard deviations are calculated first
• B) the tests are conducted at very low alpha levels
• C) the samples are independent as well as random
• D) the null hypothesis is assumed to be true

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