Question 320243: A researcher studying stress in interested in the blood pressure measurements of CEOs for major corporations. He believes that the mean systolic blood pressure of CEOs of major corporations is less than 123 mm Hg,which is the value reported in a possibly outdated journal article. He plans to perform a statistical test. He measures the systolic blood pressures of a random sample of CEOs of major corporations and finds the mean of the sample to be 124 mm Hg and the standar deviation of the sample t be 15 mm Hg.Based on this information:
What is the null hypothesis and the alternate hypothesis that should be used for this test?
In the context of the test, what is a Type II error?
Suppose the research decides to reject the hypothesis, What sort of error might he be making?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A researcher studying stress in interested in the blood pressure measurements of CEOs for major corporations. He believes that the mean systolic blood pressure of CEOs of major corporations is less than 123 mm Hg,which is the value reported in a possibly outdated journal article.
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He plans to perform a statistical test. He measures the systolic blood pressures of a random sample of ?? CEOs of major corporations and finds the mean of the sample to be 124 mm Hg and the standard deviation of the sample t be 15 mm Hg.Based on this information:
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What is the null hypothesis and the alternate hypothesis that should be used for this test?
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Ho: u = >= 123
Ha: u < 123 (researcher claim)
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Note: You have listed the sample mean but not the sample size.
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Cheers,
Stan H.
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In the context of the test, what is a Type II error?
Suppose the research decides to reject the hypothesis, What sort of error might he be making?
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