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If the weights of students in U.O.J. are bell-shaped. We take a sample of 4200 students with mean 70 kgs and variance 9 kgs. Find

If the weights of students in U.O.J. are bell-shaped. We take a sample of 4200 students with mean 70 kgs and variance 9 kgs. Find the observation for which 21 weights are smaller? Select one

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