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Mathematics, 22.06.2019 11:00 marshalldayton1452
Adevelopmental psychologist has prepared a training program that according to a psychological theory should improve problem solving ability. for the population of six-year olds, the average score on a standardized problem-solving test is known to be μ = 80 with σ = 10. to test the effectiveness of the training program, a random sample of 18 six-year-old children were selected. after training, the average score for this sample is m = 84.44. the experimenter used an alpha level of .05.perform the hypothesis test for this experiment.
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