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4 decimals Application Exercise: Opening up is thought to improve individuals' mood following a tragic incident. A health psychologist decided to validate this theoryr on

4 decimals
Application Exercise: "Opening up" is thought to improve individuals' mood following a tragic incident. A health psychologist decided to validate this theoryr on PTSD patients. The psychologist collected a sample of 29 PTSD patients and asked them to talk about their PTSD related issues ("open up") with their family. The psychologist assessed the patients' level of happiness afterwards and obtained a mean of 115.17 with a variance of 24.01. The average happiness of PTSD individuals is known to be 111. What can be concluded with a = 0.10

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