A researcher calculates a statistical test and obtains a p value of .86. He decides to...
A researcher calculates a statistical test and obtains a p value of .86. He decides to reject the null hypothesis. Is this decision correct, or has he committed a Type I or Type II error? Explain your answer.
Homework Answers
Answer:
The decision of the researcher is not correct. This is because if the p-value is greater than 0.05, we do not reject the null hypothesis.
In this case, the researcher has committed a Type I error. This is because type I error occurs when the null hypothesis is rejected, even when it is true.
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A researcher calculates a statistical test and obtains a p value
of .86. He decides to...
A researcher sets the significance level (α) at .05. If the results of the statistical analysis...
A researcher sets the significance level (α) at .05. If the results of the statistical analysis reveal a p-value of .05, the researcher should ______ (reject or fail to reject) the null hypothesis. The potential error that the researcher is making is a Type _____ (I or II) error.
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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blood pressure, , of CEOs of major corporations is more than 136 mm Hg, which is the value reported in a possibly outdated journal artide. 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...
1. Which of the following demonstrates a Type I Error? A. A researcher obtains a significant...
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, in a (two-tail) hypothesis test, the p-value is 0.0758, what is your statistical decision if...
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A researcher studying stress is interested in the blood pressure measurements of chief executive officers (CEOs)...
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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blood pressure, , of CEOs of major corporations is more than 136 mm Hg, which is the value reported in a possibly outdated journal artide. 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...
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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, u, of CEOs of major corporations is more than 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...
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