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A worldwide organization of academic claims that the mean IQ score of its members is 112, with a standard deviation of 15. Randomly selected group of 40 members of its organization is tested and the results reveal that the mean IQ score in this sample is 115.2 . If the organizations claim is correct what is the probability of having a sample mean of 115.2 or less for a random sample of this size?

Reference no: EM131215196

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