(Answered) A researcher is investigating the effectiveness of a new

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A researcher is investigating the effectiveness of a new medication for lowering blood pressure for individuals with systolic pressure greater than 140. For this population, systolic scores average u=160 with a standard deviation of o=20 and the scores form a normal -shaped distribution. The researcher plans to select a sample of n=25 individuals, and measure their systolic blood pressure after they take the medication for 60 days. If the researcher uses a two-tailed test with ox=0.05.

a. What is the power of the test if the medication has a 5-point effect?

b. What is the power of the test if the medication has a 10-point effect?

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