A researcher studying stress is interested in the blood pressure measurements of chief executive officers (CEOS) of major corporations. He believes that the mean systolic blood pressure, !, of CEOS of major corporations is different from 130 mm Hg, which is the value reported in a possibly outdated journal article.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 122 mm Hg and the standard deviation of the sample to be 16 mm Hg. Based on this information, answer the questions below. What are the null hypothesis (H,) and the alternative hypothesis (H,) that should be used for the test? Ho: u is ? H: µ is ? In the context of this test, what is a Type II error? A Type II error is ? when, in fact, u is ? the hypothesis that u is ? Suppose that the researcher decides not to reject the null hypothesis. What sort of error might he be making? ?
This problem is fill in the blank. Just choose the correct answers. Thank you for your help. I posted the problem and wrote it out because the drop-down boxes probably will not work.
A researcher studying stress is interested in the blood pressure measurements of chief executive officers (CEOs) of major corporations. He believes that the mean systolic blood pressure, μ, of CEOs of major corporations is different from 130 mm Hg, which is the value reported in a possibly outdated journal article.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
122 mm Hg and the standard deviation of the sample to be 16 mm Hg.
Based on this information, answer the questions below.
- What are the null hypothesis (H0) and the alternative hypothesis (H1) that should be used for the test?
H0: (choose one) less than, less than or equal to, greater than, greater than or equal to, equal to, or not equal to.
(choose one) 122 mm Hg, 16 mm Hg, or 130 mm Hg.
H1: (Choose one) less than, less than or equal to, greater than, greater than or equal to, equal to, or not equal to.
(Choose one) 122 mm Hg, 16 mm Hg, or 130 mm Hg.
2. In the context of this test, what is a Type II error?
A type II error is
(choose one) rejecting or failing to reject the hypothesis the μ is
(choose one) less than, less than or equal to, greater than, greater than or equal to, equal to, or not equal to
(Choose one) 122 mm Hg, 16 mm Hg, or 130 mm Hg, when, in fact, μ is
(choose one) less than, less than or equal to, greater than, greater than or equal to, equal to, or not equal to
(Choose one) 122 mm Hg, 16 mm Hg, or 130 mm Hg.
3. Suppose that we decide to reject the null hypothesis. What sort of error might we be making? (Choose one) Type I or Type II
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