Mathematics, 15.04.2020 04:20 haileysolis5

He mean score for freshmen on an aptitude testat a certain college is 540, with a standard deviation of50. Assume the means to be measured to any degreeof accuracy. What is the probability that two groupsselected at random, consisting of 32 and 50 students, respectively, will differ in their mean scores by(a) more than 20 points

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He mean score for freshmen on an aptitude testat a certain college is 540, with a standard deviation...