What is probability that two groups of students will differ

Reference no: EM13307890

The mean score of students on an aptitude test is 72 points with a standard deviation of 8 points. What is the probability that two groups of students, consisting of 28 and 36 students respectively, will differ in their mean scores by (a) 3 or more points (b) 6 or more points?

Reference no: EM13307890

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