The following data represent the results from an independent-measures study comparing two treatment conditions.

[tex]\[
\begin{array}{|c|c|}
\hline
\text{Treatment One} & \text{Treatment Two} \\
\hline
6.3 & 2.9 \\
\hline
6.3 & 5.4 \\
\hline
8.1 & 6.4 \\
\hline
6.3 & 3.0 \\
\hline
6.8 & 3.2 \\
\hline
6.8 & 3.8 \\
\hline
7.0 & 3.7 \\
\hline
5.6 & 6.2 \\
\hline
\end{array}
\][/tex]

Conduct ANOVA with [tex]$\alpha=0.05$[/tex] for this data and calculate the [tex][tex]$F$[/tex]-ratio[/tex] and [tex]$p$-value[/tex]. Round your answer to three decimal places. Assume all population and ANOVA requirements are met.

- [tex]F$-ratio[/tex]: $\square[tex]$
- [tex]p$[/tex]-value[/tex]: [tex]$\square$[/tex]

Now, conduct a [tex]$t$-test[/tex] with [tex]$\alpha=0.05$[/tex] on the same data and calculate the [tex][tex]$t$[/tex]-statistic[/tex] and [tex]$p$-value[/tex]. Round your answer to three decimal places.

- [tex]t$-statistic[/tex]: $\square[tex]$
- [tex]p$[/tex]-value[/tex]: [tex]$\square$[/tex]

Observing the p-values, was there a difference in the result of the hypothesis test?

- Yes, the p-values are different enough to change the outcome of the test.



Answer :

To solve this question, we first need to conduct an ANOVA (Analysis of Variance) test and then a t-test to compare the two treatment conditions. Next, we will assess whether the p-values obtained from both tests affect the conclusions drawn from the hypothesis tests at the [tex]\(\alpha = 0.05\)[/tex] significance level.

### Conduct ANOVA

1. Data Sets:
- Treatment One: [tex]\([6.3, 6.3, 8.1, 6.3, 6.8, 6.8, 7, 5.6]\)[/tex]
- Treatment Two: [tex]\([2.9, 5.4, 6.4, 3, 3.2, 3.8, 3.7, 6.2]\)[/tex]

2. ANOVA Calculation:
- Calculate the F-ratio and p-value for the data sets.

From our computations:
- F-ratio: 16.421
- p-value: 0.001

### Conduct t-Test

Next, we perform a t-test for the same data sets.

3. t-Test Calculation:
- Calculate the t-statistic and p-value for the data sets.

From our computations:
- t-statistic: 4.052
- p-value: 0.001

### Conclusion from p-values

Finally, we compare the p-values obtained from both tests to determine the outcome at a significance level of [tex]\(\alpha = 0.05\)[/tex].

Since the p-value for both tests is 0.001, which is less than the significance level [tex]\(\alpha = 0.05\)[/tex], we reject the null hypothesis in both cases. This indicates a significant difference between the two treatment conditions.

### Observing the p-values

Even though the p-values obtained from both tests are the same, it is noteworthy that both tests show a significant difference. Hence, there is no discrepancy affecting the hypothesis test outcomes.

### Summary

- F-ratio: 16.421
- p-value (ANOVA): 0.001
- t-statistic: 4.052
- p-value (t-test): 0.001
- Conclusion: The p-values indicate a significant difference between the two treatments. Therefore, despite the similar p-values, the hypothesis test conclusions are consistent.

By looking at the consistent p-values, we can assert that the result of the hypothesis tests is not affected by the slight differences in methodology.