Two separate samples are selected from the same population. Each have an n=8. Both samples receive a different treatment. After the treatment, the first sample has SS=16 and the second sample has...

Two separate samples are selected from the same population. Each have an n=8. Both samples receive a different treatment. After the treatment, the first sample has SS=16 and the second sample has SS=24.

1. Using symbols, state the hypotheses for a two-tailed test.


2. With a two-tail α=0.05, identify the degrees of freedom and the critical regions.


3. Calculate the pooled variance.


4. Calculate the estimated standard error.


5. With a mean of 3 for the first group and mean of 6 for the second group, compute the t statistic. State the conclusion of these findings.


6. Calculate the estimated d AND r².