Question: A cognitive psychologist tested whether using a new diet program leads to greater weight loss. The sample of people who tried the new diet program

A cognitive psychologist tested whether using a new diet program leads to greater weight loss. The sample of people who tried the new diet program had an average weight loss of 10 pounds over 3 months. The estimated population standard deviation was 2. They compared the results to the average weight loss achieved by people when place in other types of diets, which was 5 pounds within 3 months. How do you compute the effect size? 2 - 5/ 10 10 - 5/ 2 10 - 2/ 5 5 - 10/ 2

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