标准正态表x 0.00 0.01 0.02 0.03 0.04 0.05 0.0 0.5000 0.5040 0.5080 0.5120 0.5160 0.5199 0.1 0.5398 0.5438 0.5478 0.5517 0.5557 0.5596 0.2 0.5793 0.5832 0.5871 0.5910 0.5948 0.5987 0.3 0.6179 0.6217 0.6255 0.6293 0.6331 0.6368 0.4 0.6554 0.6591 0.6628 0.6664 0.6700 0.6736 0.5 0.6915 0.6950 0.6985 0.7019 0.7054 0.7088 0.6 0.7257 0.7291 0.7324 0.7357 0.7389 0.7422 0.7 0.7580 0.7611 0.7642 0.7673 0.7704 0.7734 0.8 0.7881 0.7910 0.7939 0.7967 0.7995 0.8023 0.9 0.8159 0.8186 0.8212 0.8238 0.8264 0.82891.0 0.8413 0.8438 0.8461 0.8485 0.8508 0.8531 1.1 0.8643 0.8665 0.8686 0.8708 0.8729 0.8749 1.2 0.8849 0.8869 0.8888 0.8907 0.8925 0.8944 1.3 0.9032 0.9049 0.9066 0.9082 0.9099 0.9115 1.4 0.9192 0.9207 0.9222 0.9236 0.9251 0.9265 1.5 0.9332 0.9345 0.9357 0.9370 0.9382 0.9394 1.6 0.9452 0.9463 0.9474 0.9484 0.9495 0.9505 1.7 0.9554 0.9564 0.9573 0.9582 0.9591 0.9599 1.8 0.9641 0.9649 0.9656 0.9664 0.9671 0.96781.9 0.9713 0.9719 0.9726 0.9732 0.9738 0.97442.0 0.9772 0.9778 0.9783 0.9788 0.9793 0.9798 2.1 0.9821 0.9826 0.9830 0.9834 0.9838 0.98422.2 0.9861 0.9864 0.9868 0.9871 0.9875 0.9878 2.3 0.9893 0.9896 0.9898 0.9901 0.9904 0.9906 2.4 0.9918 0.9920 0.9922 0.9925 0.9927 0.9929 2.5 0.9938 0.9940 0.9941 0.9943 0.9945 0.9946 2.6 0.9953 0.9955 0.9956 0.9957 0.9959 0.9960 2.7 0.9965 0.9966 0.9967 0.9968 0.9969 0.9970 2.8 0.9974 0.9975 0.9976 0.9977 0.9977 0.99782.9 0.9981 0.9982 0.9982 0.9983 0.9984 0.99843.0 0.9987 0.9987 0.9987 0.9988 0.9988 0.9989 3.1 0.9990 0.9991 0.9991 0.9991 0.9992 0.9992 3.2 0.9993 0.9993 0.9994 0.9994 0.9994 0.9994 3.3 0.9995 0.9995 0.9995 0.9996 0.9996 0.99963.4 0.9997 0.9997 0.9997 0.9997 0.9997 0.99973.5 0.9998 0.9998 0.9998 0.9998 0.9998 0.99983.6 0.9998 0.9998 0.9999 0.9999 0.9999 0.99993.7 0.9999 0.9999 0.9999 0.9999 0.9999 0.99993.8 0.9999 0.9999 0.9999 0.9999 0.9999 0.99993.9 1.0000 1.0000 1.0000 1.0000 1.0000 1.0000n\p 0.005 0.010 0.025 0.050 0.100 0.250 0.750 0.900 0.9501 0.0000 0.0002 0.0010 0.0039 0.0158 0.1015 1.3233 2.7055 3.84152 0.0100 0.0201 0.0506 0.1026 0.2107 0.5754 2.7726 4.6052 5.99153 0.0717 0.1148 0.2158 0.3518 0.5844 1.2125 4.1083 6.2514 7.81474 0.2070 0.2971 0.4844 0.7107 1.0636 1.9226 5.3853 7.7794 9.48775 0.4117 0.5543 0.8312 1.1455 1.6103 2.6746 6.6257 9.2364 11.07050.6757 0.8721 1.2373 1.6354 2.2041 3.4546 7.8408 10.6446 12.59160.9893 1.2390 1.6899 2.1673 2.8331 4.2549 9.0371 12.0170 14.06711.3444 1.64652.1797 2.73263.4895 5.0706 10.2189 13.3616 15.50731.73492.0879 2.70043.32514.16825.8988 11.3888 14.6837 16.91902.1559 2.55823.2470 3.94034.8652 6.7372 12.5489 15.9872 18.30702.60323.0535 3.81574.57485.5778 7.5841 13.7007 17.2750 19.67513.0738 3.57064.40385.22606.3038 8.4384 14.8454 18.5493 21.02613.56504.10695.0088 5.8919 7.0415 9.2991 15.9839 19.8119 22.36204.0747 4.66045.62876.57067.7895 10.1653 17.1169 21.0641 23.68484.60095.22936.26217.26098.5468 11.0365 18.2451 22.3071 24.99585.1422 5.81226.90777.9616 9.3122 11.9122 19.3689 23.5418 26.29625.69726.40787.5642 8.6718 10.0852 12.7919 20.4887 24.7690 27.58716789 10 111213141516176.26487.01498.23079.3905 10.8649 13.6753 21.6049 25.9894 28.86936.84407.63278.9065 10.1170 11.6509 14.5620 22.7178 27.2036 30.14357.4338 8.2604 9.5908 10.8508 12.4426 15.4518 23.8277 28.4120 31.41048.0337 8.8972 10.2829 11.5913 13.2396 16.3444 24.9348 29.6151 32.67068.6427 9.5425 10.9823 12.3380 14.0415 17.2396 26.0393 30.8133 33.92449.2604 10.1957 11.6886 13.0905 14.8480 18.1373 27.1413 32.0069 35.17259.8862 10.8564 12.4012 13.8484 15.6587 19.0373 28.2412 33.1962 36.415010.5197 11.5240 13.1197 14.6114 16.4734 19.9393 29.3389 34.3816 37.652511.1602 12.1981 13.8439 15.3792 17.2919 20.8434 30.4346 35.5632 38.885111.8076 12.8785 14.5734 16.1514 18.1139 21.7494 31.5284 36.7412 40.113312.4613 13.5647 15.3079 16.9279 18.9392 22.6572 32.6205 37.9159 41.337113.1211 14.2565 16.0471 17.7084 19.7677 23.5666 33.7109 39.0875 42.557018192021 22 2324252627282913.7867 14.9535 16.7908 18.4927 20.5992 24.4776 34.7997 40.2560 43.773014.4578 15.6555 17.5387 19.2806 21.4336 25.3901 35.8871 41.4217 44.985315.1340 16.3622 18.2908 20.0719 22.2706 26.3041 36.9730 42.5847 46.194315.8153 17.0735 19.0467 20.8665 23.1102 27.2194 38.0575 43.7452 47.399916.5013 17.7891 19.8063 21.6643 23.9523 28.1361 39.1408 44.9032 48.602417.1918 18.5089 20.5694 22.4650 24.7967 29.0540 40.2228 46.0588 49.801817.8867 19.2327 21.3359 23.2686 25.6433 29.9730 41.3036 47.2122 50.998518.5858 19.9602 22.1056 24.0749 26.4921 30.8933 42.3833 48.3634 52.192319.2889 20.6914 22.8785 24.8839 27.3430 31.8146 43.4619 49.5126 53.383519.9959 21.4262 23.6543 25.6954 28.1958 32.7369 44.5395 50.6598 54.572220.7065 22.1643 24.4330 26.5093 29.0505 33.6603 45.6160 51.8051 55.758521.420822.9056 25.2145 27.3256 29.9071 34.5846 46.6916 52.9485 56.942430 313233 34 35363738394041T分布0.75 0.80 0.85 0.90 0.95 0.997 0.999 0.9990.975 0.990 0.995p 0 0 0 0 0 5 0 5A1.00 1.37 1.96 3.07 6.31 12.70 31.82 63.65 127.32 318.30 636.61100 642677 386205 67 1388920.81 1.06 1.38 1.88 2.92 4.302 6.964 9.924 14.089 22.327 31.599 265 07 62 56 00 7 6 8 0 1 10.76 0.97 1.24 1.63 2.35 3.182 4.540 5.840 10.214 12.924 3 7.453349 85 98 77 34 4 7 9 5 04 0.74 0.941.18 1.532.13 2.7763.7464.6045.5976 7.1732 8.610342 22.1385 23.6501 25.9987 28.1440 30.7654 35.5099 47.7663 54.0902 58.124043 22.8595 24.3976 26.7854 28.9647 31.6255 36.4361 48.8400 55.2302 59.303544 23.5837 25.1480 27.5746 29.7875 32.4871 37.3631 49.9129 56.3685 60.480945 24.3110 25.9013 28.3662 30.6123 33.3504 38.2910 50.9849 57.5053 61.656207 10 96 32 181.151.472.01 2.5703.3644.0324.77335.8934 5859506 910.72 0.91 5 67956.8688 1.431.942.4463.142 9832970.71 0.90 1.13 6 7657423.7074.31685.2076 45.9588 0.71 0.89 1.11 7 1160921.892.364 2.9983.4994.0293 4.7853 46651.41 495.4079 1.391.852.306 2.896 689550.70 0.88 1.10 8 6489813.3553.83254.5008 45.0413 1.381.832.262 2.821 3031 2 40.70 0.88 1.09 9 2734973.2493.68974.2968 84.7809 0.69 0.87 1.09 1.37 10989131221.812.228 2.7633.1693.58144.1437 251 834.58690.69 0.87 1.081.36 11745577 341.792.2012.7183.1053.49664.0247 59184.43700.69 0.87 1.08 1.35 1.78 2.178 2.6813.0543.4284 3.92964.317855 263262238 050.690.871.071.351.772.1602.6503.0123.3725 3.85204.220838029502094330.69 0.861.071.341.762.1442.624 2.9763.3257 3.78744.1405 24 81 63 50 13 8 580.69 0.861.071.341.752.1312.602 2.9463.2860 3.73284.0728 12 62 35 06 31 4 570.69 0.861.071.331.742.1192.583 2.9203.2520 3.68624.0150 01 47 11 68 59 9 580.68 0.861.061.331.732.1092.566 2.8983.2224 3.6458 3.9651 92 33 90 34 96 8 920.68 0.861.061.331.732.1002.552 2.8783.1966 3.6105 3.921684207204419440.68 0.861.061.321.722.0932.539 2.8603.1737 3.5794 3.8834 761055 77 91 0 5912131415161718190.68 0.86 1.06 1.32 1.72 2.086 2.528 2.8453.1534 3.5518 3.8495 70 0040534730.680.851.061.321.722.0792.517 2.8313.1352 3.5272 3.819364912732076640.68 0.851.061.321.712.0732.508 2.8183.1188 3.5050 3.7921 58 83 14 12 71 9 380.68 0.851.061.311.712.0682.499 2.8073.1040 3.4850 3.7676 53 75 03 95 39 7 930.68 0.851.051.311.712.0632.492 2.7963.0905 3.4668 3.7454 48 69 93 78 09 9 290.68 0.851.051.311.702.0592.485 2.7873.0782 3.4502 3.7251 44 62 84 63 81 5 140.68 0.851.051.311.702.0552.478 2.7783.0669 3.4350 3.706640577550565670.68 0.851.051.311.702.0512.472 2.7703.0565 3.4210 3.6896 3751 67 37 33 8 7720212223242526270.68 0.85 1.05 1.31 1.70 2.048 2.467 2.7633.0469 3.4082 3.6739 2834 46 60 25 1130.68 0.85 1.05 1.312930 42 53 14 1.69 2.045 2.462 2.7563.0380 3.3962 3.6594 91 2 0 40.68 0.85 1.05 1.313028 38 47 04 1.69 2.042 2.457 2.7503.0298 3.3852 3.6460 73 3 3 00.68 0.85 1.05 1.33125 34 41 95 1.69 2.039 2.452 2.7443.0221 3.3749 3.6335 55 5 8 00.68 0.85 1.05 1.3 3222 30 35 86 1.69 2.036 2.448 2.7383.0149 3.3653 3.6218 39 9 7 50.68 0.85 1.05 1.33320 26 30 77 1.69 2.034 2.444 2.7333.0082 3.3563 3.6109 24 5 8 30.68 0.85 1.05 1.33418 23 25 70 1.69 2.032 2.441 2.7283.0020 3.3479 3.6007 09 2 1 40.68 0.85 1.05 1.33516 20 20 62 1.68 2.030 2.437 2.7232.99603.3400 3.5911 96 1 7 80.68 0.85 1.05 1.30 1.68 2.028 2.434 2.71936 2.9905 3.3326 3.582114 17 16 55 830.68 0.85 1.05 1.33712 14 12 49 1.68 2.026 2.431 2.7152.98523.3256 3.5737 71 2 4 40.68 0.85 1.05 1.33810 12 08 42 1.68 2.024 2.428 2.7112.98033.3190 3.5657 60 4 6 63940 0.68 0.85 1.05 1.30 1.68 2.022 2.42508 09 04 36 492.7072.97563.3128 3.558190.68 0.85 1.05 1.30 1.68 2.021 2.42307 07 00 31 392.7042.97123.3069 3.551050.68 0.85 1.04 1.34105 05 97 25 1.68 2.019 2.420 2.7012.96703.3013 3.5442 29 5 8 20.68 0.85 1.04 1.34204 03 94 20 1.68 2.018 2.418 2.6982.96303.2960 3.5377 20 1 5 10.68 0.85 1.04 1.34302 01 91 16 1.68 2.016 2.416 2.6952.95923.2909 3.5316 11 7 3 10.68 0.84 1.04 1.30 1.68 2.015 2.414 2.6922.95553.2861 3.525801998811024130.680.841.041.301.672.0142.412 2.6892.95213.2815 3.520300978506941160.67 0.841.041.301.672.0122.410 2.6872.94883.2771 3.5150 99 95 83 02 87 9 20.670.841.041.291.672.0112.408 2.6842.94563.2729 3.509997938098797360.67 0.841.041.291.672.0102.406 2.6822.94263.2689 3.5051 96 92 78 94 72 6 620.670.841.041.291.672.0092.404 2.6802.93973.2651 3.50049590759166690.670.841.041.291.672.0082.403 2.6772.93703.2614 3.496094897387596380.67 0.841.041.291.672.0072.401 2.6752.93433.2579 3.4918 9387 71 84 53 6 7744454647484950510.67 0.84 1.04 1.29 1.67 2.006 2.400 2.67352 2.9318 3.2545 3.487792 86 69 80 47 70.67 0.84 1.04 1.295391 85 67 77 1.67 2.005 2.398 2.6712.92933.251341 7 8 83.48380.67 0.84 1.04 1.295491 83 65 74 1.67 2.004 2.397 2.6702.92703.24836 9 4 03.48000.67 0.84 1.04 1.295590 82 63 71 1.67 2.004 2.396 2.6682.92473.24530 0 1 23.47640.67 0.84 1.04 1.2 5689 81 61 69 1.67 2.003 2.394 2.6662.92253.242325 2 8 53.47290.67 0.84 1.04 1.295788 80 59 66 1.67 2.002 2.393 2.6642.92043.239520 5 6 93.46960.67 0.84 1.04 1.295887 79 58 63 1.67 2.001 2.392 2.6632.91843.236816 7 4 33.46630.67 0.84 1.04 1.295987 78 56 61 1.67 2.001 2.391 2.6612.91643.234211 0 2 83.46320.67 0.84 1.04 1.296086 77 55 58 1.67 2.000 2.390 2.6602.91463.2317 3.4602 06 3 1 30.67 0.84 1.04 1.296185 76 53 56 1.67 1.999 2.389 2.6582.91273.2293 3.4573 02 6 0 90.67 0.84 1.04 1.296285 75 52 54 1.66 1.999 2.388 2.6572.91103.2270 3.4545 98 0 0 50.67 0.84 1.04 1.296384 74 50 51 1.66 1.998 2.387 2.6562.90933.2247 3.4518 94 3 0 10.67 0.84 1.04 1.296483 73 49 49 1.66 1.997 2.386 2.6542.90763.22253.4491 90 7 0 90.67 0.84 1.04 1.296583 72 48 47 1.66 1.997 2.385 2.6532.90603.2204 3.4466 86 1 1 60.67 0.84 1.04 1.296682 71 46 45 1.66 1.996 2.384 2.6522.90453.21843.4441 83 6 2 40.67 0.84 1.04 1.296782 70 45 43 1.66 1.996 2.383 2.6512.90303.2164 3.4417 79 0 3 20.67 0.84 1.04 1.29 1.66 1.995 2.382 2.65068 2.9015 3.2145 3.4394697081 69 44 41 760.67 0.84 1.04 1.291.6681 69 43 39 720.67 0.84 1.04 1.291.6680 68 42 38 690.67 0.84 1.04 1.29 1.667180 67 41 36 660.67 0.84 1.04 1.27279 66 40 340.67 0.84 1.04 1.297379 66 38 330.67 0.84 1.04 1.297478 65 37 310.67 0.84 1.04 1.297578 64 36 295 4 11.9942.381 2.6492.90013.2126 3.4372 9 6 01.9942.380 2.6472.89873.2108 3.4350 4 8 91.9932.380 2.6462.89743.2090 3.4329 9 0 91.66 1.9932.379 2.6452.89613.2073 3.4308 63 5 3 91.66 1.9932.378 2.6442.89493.2057 3.4289 60 0 5 91.66 1.9922.377 2.6432.89363.2041 3.4269 57 5 8 91.66 1.9922.377 2.6432.89243.2025 3.4250 54 1 1 00.67 0.84 1.04 1.29 1.66 1.991 2.376 2.6422.89133.2010 3.4232 77 643628527 410.670.841.041.291.661.9912.375 2.6412.89023.1995 3.421477633526493820.67 0.841.041.291.661.9902.375 2.6402.88913.1980 3.4197 76 63 34 25 46 8 130.67 0.841.041.291.661.9902.374 2.6392.88803.1966 3.4180 76 62 33 24 44 5 550.67 0.841.041.291.661.9902.373 2.6382.88703.1953 3.4163 76 61 32 22 41 1 970.67 0.841.041.291.661.9892.373 2.6372.88603.1939 3.4147 75 61 31 21 39 7 390.67 0.841.041.291.661.9892.372 2.6372.88503.1926 3.413275603020363710.67 0.841.041.291.661.9892.372 2.6362.88403.1913 3.4116 756029 18 34 0 1476777879808182830.67 0.84 1.04 1.29 1.66 1.988 2.371 2.6352.88313.1901 3.4102 74 592917326 660.670.841.041.291.661.9882.371 2.6342.88223.1889 3.40877459281630390.67 0.841.041.291.661.9872.370 2.6342.88133.1877 3.4073 74 58 27 15 28 9 520.67 0.841.041.291.661.9872.370 2.6332.88043.1866 3.4059 73 58 26 14 26 6 050.67 0.841.041.291.661.9872.369 2.6322.87953.1854 3.4045 73 57 26 12 24 3 590.67 0.841.041.291.661.9872.369 2.6322.87873.1843 3.4032 73 57 25 11 22 0 020.67 0.841.041.291.661.9862.368 2.6312.87793.1833 3.401972562410207560.670.841.041.291.661.9842.364 2.6252.87073.1737 3.3905 70 52 18 01 02 0 298485868788899010 012 0.67 0.84 1.04 1.28 1.65 1.979 2.357 2.6172.85993.1595 3.373530.9039.8649.5053.5955.8357.2459.4 61.2261.7462.2658.91459.869.08.539.16 9.24 9.29 9.35 9.37 9.38 9.42 9.44 9.465.45.5465.39 5.34 5.31 5.27 5.25 5.24 5.20 5.18 5.1765 46 09 86 77 4F分布10 15 20 302.864.34.54 4.06 3.78 3.59 3.46 3.36 3.29 3.23 3.73.43.23.13.02.94.193.623.293.072.922.812.732.66 4.113.523.182.962.812.692.612.544.053.453.112.882.732.612.522.453.983.373.012.782.622.512.412.343.953.342.982.752.592.472.382.303.943.322.962.722.562.442.352.273.873.242.872.632.462.342.242.173.843.212.842.592.422.302.202.123.823.172.802.562.382.252.162.08456 7891 01122.613.18 12.61 2.482.392.83.14 62.56 2.432.352.73.10 32.52 2.392.31 2.73.07 02.492.362.272.73.05 72.46 2.332.242.63.03 42.442.312.222.63.012.992.62.42 2.292.202.40 2.272.182.282.242.212.102.062.23 2.202.162.052.012.011.962.192.152.122.011.96 2.16 2.122.091.97 1.921.911.872.132.092.061.941.89 2.10 2.062.031.91 1.861.841.812.082.062.042.001.891.841.782.021.981.861.811.761 21 31 41 51 61 71 81 9P= 0.9992.38 2.252.162.042.001.961.841.791.742.52.36 2.232.142.021.981.951.831.781.7272.52.35 2.222.132.011.971.931.811.761.7062.52.33 2.192.101.981.941.911.781.731.6742.52.31 2.172.081.961.921.881.761.711.6522.52.29 2.162.061.941.901.871.741.691.632.42.28 2.142.051.931.881.851.721.671.612.52.97 2.96 2.95 2.93 2.91 2.89 2.8892 02 12 22 42 62 83 012 3 5 6 7 8 10 12 14 16 18 205 16.2627m62499562 576 592602 610 6146194052.540359816170089.54.53.68.32.46.32.61.5 18.35 .07.10 .78567273399 98.5034.1221.2012.0 11. 10. 10. 10.2 10. 9.8 9.79.6 9.68 9. 63997469169715513.99.99.1 99. 99. 99. 99.3 99. 99. 99. 99.4 99. .4 00 25 30 36 39 42 43 44 26 30. 29.4 28. 28. 27. 27.4 27. 27. 26. 26.8 26. .682712467350592751418.16.6 15. 15. 14. 14.8 14. 14. 14. 14.1 14..0009852986637250810. 9.18.7 8.2 7.97.7 7.6 7.47.7.2 5.6 5.3 4.8 4.6 4.4 4.2 4.1 4.6.224.744.2117 2 9 3 09 5 10 119.656 13.75 9.78 92 5 5 8.106 8 2 7.52 0 5 40 712.259.58.4557.87.4 566.96.84 96.7 6.4 276.36.28 66.2 6. 1 168.67.0 6.6 6.1811.267.5951385.9 5.6 5.55.4 5.6.035.481761368.06.4 6.0 5.65.3 5.1 910.566.995.472261515.04.8 4.4.92168110 10.047.56.5565.9 5.6 945.25.06 04.9 4.7 414.64.52 04.4 4. 6416.95.4 5.0 4.64.3 4.1 129.335.954.503164964.03.93.3.9751866.75.2 4.8 4.44.1 139.075.744.3016493.93.83.7 3.3.7866266006.55.04.6 4.2 4.0 3.8 3.73.5 3.5.564.143.62149836 51148.864.6 4.3 3.93.6 3.4 3.33.2 3. 5.183.793.277438651166.1178.4015.84.4 4.1 3.73.4 3.2 3.1208.104.94 3.56536332.9 2.3.05 9946.34.8 4.5 4.1158.685.4269643.8 3.6 3.53.4 3.4.003.49976237168.536.25.2934.74.4 744.03.89 33.7 3.5 853.43.37 53.3 3. 1266.04.5 4.2 3.8 188.295.093.7118543.63.3 3.23.13.3.19773 08198.185.94.5 4.1 3.73.5 3.3 3.13.0 3. 5.013.633.125.74.3 4.0 3.63.4 3.1 218.024.873.518 7 4 4 0 73.02.92.2.9973 885.64.2 3.9 3.2 3.0 2.9 2.74.723.362.851263397424 7.824.03.7 3.33.0 2.8 2.72.6 2.3.172.662 07440 555.3307.564.5195.7 4.33.5 3.33.1 227.95 4.823.452 1 9 9 5 23.02.82.2.942 8 83 237.885.64.7664.2 3.9 643.53.41 43.3 3.0 072.92.89 72.8 2. 378257.775.54.6874.1 3.8 853.43.32 63.2 2.9 292.82.81 92.7 2. 570267.725.54.6434.1 3.8 423.43.29 23.1 2.9 862.82.78 62.7 2.2 665.44.1 3.7 3.33.1 277.684.603.26918952.92.82.6 2.2.7532863287.645.44.5754.0 3.7 753.33.23 63.1 2.9 22.72.72 92.6 2. 560297.605.44.5424.03.7 433.33.20 33.0 2.8 972.72.69 72.6 2. 357Excel公式1. 正态分布函数Excel计算正态分布时，使用NORMDIS函数，其格式如下: NORMDISTa,y,c，累积）其中，“累积”：若为TRUE则输出分布函数值，即P{X W a}; 若为FALSE则为概率密度函数值.示例：已知X服从正态分布，卩=600,c= 100，求P{X< 500}.输入公式NORMDIST(5OO, 600, 100, TRUE)得到的结果为0.158655，即P{X< 500}=0.158655 .2、正态分布函数的反函数Excel计算正态分布函数的反函数使用NORMIN函数,格式如下：NORMIN(p,卩,(T )，此公式计算a,使P{X <a}=p 3标准正态分布反函数=NORMSINV(0.975)3、t分布Excel计算t分布的值,采用TDIST函数,格式如下：TDIST(a,自由度，侧数)其中，“侧数”：指明分布为单侧或双侧:若为1，为单侧；此命令输出P{ T >a }若为2,为双侧•此命令输出P{ |T| >a}示例：设T服从自由度为24的t分布，求P(T>1.711).已知t = 1.711 , df=24，采用单侧，贝U T分布的值:TDIST(1.711,24,1)得到0.05，即卩P(T > 1.711)=0.054. t分布的反函数Excel使用TINV函数得到t分布的反函数,格式如下：TINV (a,自由度)输出T分布的a / 2 分位点：t_ a /2_(n)若求临界值t a (n)，则使用公式=TINV(2* a , n) 5. 返回F分布的函数是FDISTFDIST(x,degrees_freedom1,degrees_freedom2) 函数FDIST的计算公式为FDIST=P( F>x ),5.F分布的反函数FINV(probability,deg_freedom1,deg_freedom2) 已知probability=P( F>x ) ，求x。