17. A researcher studies the effect of cognitive psychotherapy on positive self-regard. The number of positive statements made about oneself is recorded for each participant during the first meeting. After 8 weekly therapy sessions, the measures are repeated for each person. For the following data.
Participant before treatment after treatment
A 7 10
B 6 13
C 9 12
D 5 8
a. Calculate the difference scores and Md
b. Compute SS, sample variance, and estimated standard error
c. Is there a significant treatment effect? Use ±=.05, two tails.
Solution Summary
The solution provides step by step method for the calculation of testing of hypothesis. Formula for the calculation and Interpretations of the results are also included.
... by-step method for the calculation of testing of hypothesis... Do not reject the null hypothesis d - d̅ ... 27.36094675 Total 94 1106.307692 t-Test: Paired Two Sample ...
... The null hypothesis tested is. ... 311 18302.91667 Sample mean (d) 25.91666667 t-Test: Paired Two Sample ... 12 Note: Use the five-step hypothesis testing procedure to ...
... a complete hypothesis, include the hypothesis, decision rule, calculation of test statistic, decision ... Step by step method for testing the hypothesis under 5 ...
... The solution provides step by step method for the calculation of testing of hypothesis... Test at the .05 level of significance ... Answer The null hypothesis tested is. ...
... step method for the calculation of testing of hypothesis... Upper-Tail Test Calculations Area Upper Critical Value ... value 0.974197 Do not reject the null hypothesis. ...
... step method for the calculation of testing of hypothesis... Conclusion: Reject the null hypothesis, since the ...t-Test: Paired Two Sample for Means After Before Mean ...
