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Based on the model ​N(1155​,84​) describing steer​ weights, what are the cutoff values for ​a) the...

Based on the model ​N(1155​,84​) describing steer​ weights, what are the cutoff values for ​a) the highest​ 10% of the​ weights? ​b) the lowest​ 20% of the​ weights? ​c) the middle​ 40% of the​ weights?

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