A1 A fx T B C 1 Table A-6 234567892223 n =0.05 =0.01 4 0.95 0.99 567 0.878 0.959 0.811 0.917 0.754 0.875 8 0.707 0.834 9 0.666 0.798 10 0.632 0.765 10 11 0.602 0.735 11 12 0.576 0.708 12 13 0.553 0.684 13 13 0.553 0.684 14 14 0.532 0.661 15 15 0.514 0.641 12222222222222232 16 16 0.497 0.623 17 17 0.482 0.606 18 18 0.468 0.59 19 19 0.456 0.575 20 20 0.444 0.561 25 0.396 0.505 30 0.361 0.463 35 0.335 0.43 24 40 0.312 0.402 25 45 0.294 0.378 26 50 0.279 0.361 27 60 0.254 0.33 28 70 0.236 0.305 29 80 0.22 0.286 30 90 0.207 0.269 100 0.196 0.256