Statistics - Hypothesis Testing
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How can we tell the direction of the test by looking at a pair of hypothesis? How can we tell which direction (or no direction) to make the hypothesis by looking at the problem statement (research question)?
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This depends upon the hypothesis (claim) in question.
For example a claim such as "The mean salary of the professors of an institution is less than $10000" is a case for a left-
tailed test. Instead, a claim such as "The mean number of years of research experience required to be conferred a
doctorate is more than 10 years" is a case for a right-tailed ...
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