Question: A training program to increase friendliness is tried on one individual randomly selected from the general public. Among the general public (who do not get

A training program to increase friendliness is tried on one individual randomly selected from the general public. Among the general public (who do not get this training program) the mean on the friendliness measure is 30 with a standard deviation of 4. The researchers want to test their hypothesis at the 5%

significance level. After going through the training program, this individual takes the friendliness measure and gets a score of 40. What should the researchers conclude?

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