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If you changed your = 0.01 , what would your new critical value be? Would this change your decision regarding your null hypothesis? Whether you

If you changed your = 0.01, what would your new critical value be? Would this change your decision regarding your null hypothesis?

Whether you have found a significant difference or not, compute Power (at = 0.01).

Provide your output from G*Power!

Discuss your findings and interpret Power as it relates Is the Power value consistent with how you evaluated the null hypothesis? Why or why not?

What are your conclusions? That is, briefly summarize your project and explain why you believe the results turned out the way they did. Is this what you expected to find? Make sure your conclusions address all comments you made in your introduction.

Further, in your opinion, do you think your results would remain the same in the larger population...why or why not?

Group Statistics

Membership Status of Subjects

N

Mean

Std. Deviation

Std. Error Mean

Grade point average

Sorority member

9

3.5833

.43986

.14662

non-member

9

3.1700

.69744

.23248

Independent Samples Effect Sizes

Standardizer

Point Estimate

95% Confidence Interval

Lower

Upper

Grade point average

Cohen's d

.58305

.709

-.257

1.654

Hedges' correction

.61229

.675

-.245

1.575

Glass's delta

.69744

.593

-.391

1.543

a. The denominator used in estimating the effect sizes.

Cohen's d uses the pooled standard deviation.

Hedges' correction uses the pooled standard deviation, plus a correction factor.

Glass's delta uses the sample standard deviation of the control group.

Independent Samples Test

Levene's Test for Equality of Variances

t-test for Equality of Means

F

Sig.

t

df

Significance

Mean Difference

Std. Error Difference

95% Confidence Interval of the Difference

One-Sided p

Two-Sided p

Lower

Upper

Grade point average

Equal variances assumed

8.246

.011

1.504

16

.076

.152

.41333

.27485

-.16933

.99600

Equal variances not assumed

1.504

13.495

.078

.156

.41333

.27485

-.17825

1.00491

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