I’m looking for the answer to number 14, the first question. All these questions

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I’m looking for the answer to number 14, the first question. All these questions go together that’s why I posted all of them here. I’ve answered 8-13 successfully I just can’t find the answer to number 14. Schedule of ClasseS Online Enrollment Personal Characterist Use the following text for the next 7 questions A researcher would like to determine if relaxation training will reduce the number of headaches for chronic headache sufferers. For a week prior to training, each participant records the number of headaches suffered. Participants then receive relaxation training and for the week following training the number of headaches is again measured. The data are as follows: Before After 6 4 3 3. 2 4 4 Test with alpha .01, one tail. 1 pts Question 8

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I’m looking for the answer to number 14, the first question. All these questions go together that’s why I posted all of them here. I’ve answered 8-13 successfully I just can’t find the answer to number 14.

Paired t test

Cohen d= mean difference/ sd    or t/sqrt(n)

Cohen d= mean difference/ sd   

=2/1.4142

=1.414

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