What is E(x̄1 − x̄2)?
Correct answer D. μ1 − μ2
Explanation
Expectation is linear, so E(x̄1 − x̄2) = E(x̄1) − E(x̄2) = μ1 − μ2.
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More Statistical Inference questions
See allWhich of these is an example of a simple hypothesis?
Correct answer C. u = 20
If n = 400 and p = 0.69, what is the 90% confidence interval for P?
Correct answer C. 0.652 and 0.728
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Which symbol denotes the level of significance?
Correct answer A. α
What are the values that separate the rejection region from the acceptance region called?
Correct answer A. Critical value
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