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In Order to Test the Hypotheses:
H0: µ μ\mu 1 - µ

Question 58

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In order to test the hypotheses:
H0: µ μ\mu 1 - µ μ\mu 2 = 0
H1: µ μ\mu 1 - µ μ\mu 2 ? \neq 0,
we independently draw a random sample of 18 observations from a normal population with standard deviation of 15, and another random sample of 12 from a second normal population with standard deviation of 25.
a. If we set the level of significance at 5%, determine the power of the test when μ\mu 1 - μ\mu 2 = 5.
b. Describe the effect of reducing the level of significance on the power of the test.

Correct Answer:

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a. Power = 1 - blured image = 0.095.
b. As...

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