Related-Samples T-Test Paired Samples Tes 1d Emor aSig C-taled Meaned Daviation
ID: 3065576 • Letter: R
Question
Related-Samples T-Test Paired Samples Tes 1d Emor aSig C-taled Meaned Daviation 1. Look at the above Related-Samples t-est SPSS output and use it to answer the following questions. Assume that the researcher is doing a 2-tailed test with -05. Should the researcher Reject Ho? a. T-test p-value: Reject Ho? Yes or No b. Calculate the Cohen's d for effect size. c. Write out the APA summary for this test. Related-Samples T-Test Paired Samples Test interval ofthe Std. Ermor Mean Std. Deviason Pair1 Before- Atter450000 k at the above Related-Samples t-Test SPSS output and use it to answer the following question Assume that the researcher is doing a 2-tailed test with .05. Should the researcher Reject Ho? a. T-test p-value: Reject Ho? Yes or No: o. Calculate the r' for effect size. Write out the APA summary for this test. .Explanation / Answer
1) From the given output, we have
a) T test p value = 0.097
No (do not reject H0), since p value = 0.097 > 0.05 significant level
b) Cohen's d = t / sqrt(n) = -2.038/sqrt(7) = -0.77
c) We conclude that there is no sufficient evidence of rejecting null hypothesis
2)
a) P value = 0.019
Yes, since p value = 0.019 < 0.05 (significant level)
b) To r^2 , we use following relation
=> (1 - r2) = r2 (n - 2) / T2
=> (1 - r2) / r2 = 5/-3.435
=> (1 - r2) / r2 = 1.4556
=> r2 = 0.4072
c) We conclude that there is sufficient evidence of rejecting null hypothesis