Question: What is the average weighted effect size, its standard error, its confidence interval, and the p-value for the test that the population value is zero?

What is the average weighted effect size, its standard error, its confidence interval, and the p-value for the test that the population value is zero? (Note: you can choose the model, but please justify your choice.?

Effect Size based on left column SE Low CI High CI

Study 1 Cohens d -0.510 0.588 -1.705 0.601

Study 2 Cohens d -0.4899 0.329 -1.1353 0.156

Study 3 Cohens d 0.4621 0.271 -0.0686 0.9929

Study 4 Cohens d 1.5 0.425 0.666 2.33

Study 5 Cohens d 0.5054 0.659 -0.6531 1.8046

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