Hypothesis Testing: Direction Matters
Provide a null hypothesis and an alternative hypothesis for a research experiment that utilizes the one-tailed test or the two-tailed test. Be sure to clearly specify which one you selected.
Two-Tailed Test: In a two-tailed test, the null hypothesis (H0) states that there is no significant difference or effect, while the alternative hypothesis (H1) states that there is a significant difference or effect, but it doesn’t specify the direction of the difference.
For example: Null Hypothesis (H0): There is no significant difference in the mean test scores between Group A and Group B. Alternative Hypothesis (H1): There is a significant difference in the mean test scores between Group A and Group B.
Now, let’s consider the one-tailed test.
One-Tailed Test: In a one-tailed test, the null hypothesis (H0) also…
Two-Tailed Test: In a two-tailed test, the null hypothesis (H0) states that there is no significant difference or effect, while the alternative hypothesis (H1) states that there is a significant difference or effect, but it doesn’t specify the direction of the difference.
For example: Null Hypothesis (H0): There is no significant difference in the mean test scores between Group A and Group B. Alternative Hypothesis (H1): There is a significant difference in the mean test scores between Group A and Group B. (Hypothesis Testing: Direction Matters)
Now, let’s consider the one-tailed test.
One-Tailed Test: In a one-tailed test, the null hypothesis (H0) also…
Two-Tailed Test: In a two-tailed test, the null hypothesis (H0) states that there is no significant difference or effect, while the alternative hypothesis (H1) states that there is a significant difference or effect, but it doesn’t specify the direction of the difference.
For example: Null Hypothesis (H0): There is no significant difference in the mean test scores between Group A and Group B. Alternative Hypothesis (H1): There is a significant difference in the mean test scores between Group A and Group B.
Now, let’s consider the one-tailed test.
One-Tailed Test: In a one-tailed test, the null hypothesis (H0) also…
