There are 25 students in a class such that no student weight more than 30kgs or less than 20 kgs. The average weight of the students in the class is 22kgs. If you take a sample of 10 students, what can be the maximum average weight of this sample?
a) 20kgs b) 22kgs c) 25kgs d) 30kgs
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the answer is opt c 25
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