Probability, p Degrees of Freedom 0.05 0.01 1 0.997 1 0.755 0.875 10 w0.576 0.708 15 0.482 0.606 20 0.423 0.457 25 0.381 0.487 30 0.349 0.449 90 0.205 0.267 100 0.195 0.254 O 0.997 O 0.755 O 0.576 O 0.875

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