Tind the probability that the sample mean will be between 120 and 121.8 mm Hg 5. top 2% of the population Assume that scores on an IQ test are normally distributed with mean p = 100 and standard deviation o – 15. What is the minimum score needed to qualify for membership in Mensa? Mensa is an organization whose membership is limited to people whose IQ is in the 3811

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