If you want to test whether the population mean is less than the hypothesized…
2023
If you want to test whether the population mean is less than the hypothesized mean, which one of the following will you use?
- A.
One-tailed test
- B.
Two-tailed test
- C.
Semi-tailed test
- D.
Three-tailed test
Attempted by 7 students.
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Correct answer: A
To test if a population mean is less than a hypothesized value, you must use a directional hypothesis. This specific directionality requires a one-tailed test to determine significance in only that single direction. Two-tailed tests are reserved for checking if the mean differs without specifying a direction.