/*T distribution for 2-tail levels of 90, 95, 98, 99, 99.5, 99.8, 99.9 Two Tails 0.1 0.05 0.02 0.01 0.005 0.002 0.001 df 90, 95, 98, 99, 99.5, 99.8, 99.9 [1,6.3138,12.7065,31.8193,63.6551,127.3447,318.493,636.045], [2, 2.9200,4.3026,6.9646,9.9247,14.0887,22.3276,31.5989], [3, 2.3534,3.1824,4.5407,5.8408,7.4534,10.2145,12.9242], [4, 2.1319,2.7764,3.7470,4.6041,5.5976,7.1732,8.6103], [5, 2.0150,2.5706,3.3650,4.0322,4.7734,5.8934,6.8688], [6, 1.9432,2.4469,3.1426,3.7074,4.3168,5.2076,5.9589], [7, 1.8946,2.3646,2.9980,3.4995,4.0294,4.7852,5.4079], [8, 1.8595,2.3060,2.8965,3.3554,3.8325,4.5008,5.0414], [9, 1.8331,2.2621,2.8214,3.2498,3.6896,4.2969,4.7809], [10,1.8124,2.2282,2.7638,3.1693,3.5814,4.1437,4.5869], [11,1.7959,2.2010,2.7181,3.1058,3.4966,4.0247,4.4369], [12,1.7823,2.1788,2.6810,3.0545,3.4284,3.9296,4.3178], [13,1.7709,2.1604,2.6503,3.0123,3.3725,3.8520,4.2208], [14,1.7613,2.1448,2.6245,2.9768,3.3257,3.7874,4.1404], [15,1.7530,2.1314,2.6025,2.9467,3.2860,3.7328,4.0728], [16,1.7459,2.1199,2.5835,2.9208,3.2520,3.6861,4.0150], [17,1.7396,2.1098,2.5669,2.8983,3.2224,3.6458,3.9651], [18,1.7341,2.1009,2.5524,2.8784,3.1966,3.6105,3.9216], [19,1.7291,2.0930,2.5395,2.8609,3.1737,3.5794,3.8834], [20,1.7247,2.0860,2.5280,2.8454,3.1534,3.5518,3.8495], [21,1.7207,2.0796,2.5176,2.8314,3.1352,3.5272,3.8193], [22,1.7172,2.0739,2.5083,2.8188,3.1188,3.5050,3.7921], [23,1.7139,2.0686,2.4998,2.8073,3.1040,3.4850,3.7676], [24,1.7109,2.0639,2.4922,2.7970,3.0905,3.4668,3.7454], [25,1.7081,2.0596,2.4851,2.7874,3.0782,3.4502,3.7251], [26,1.7056,2.0555,2.4786,2.7787,3.0669,3.4350,3.7067], [27,1.7033,2.0518,2.4727,2.7707,3.0565,3.4211,3.6896], [28,1.7011,2.0484,2.4671,2.7633,3.0469,3.4082,3.6739], [29,1.6991,2.0452,2.4620,2.7564,3.0380,3.3962,3.6594], [30,1.6973,2.0423,2.4572,2.7500,3.0298,3.3852,3.6459], [31,1.6955,2.0395,2.4528,2.7440,3.0221,3.3749,3.6334], [32,1.6939,2.0369,2.4487,2.7385,3.0150,3.3653,3.6218], [33,1.6924,2.0345,2.4448,2.7333,3.0082,3.3563,3.6109], [34,1.6909,2.0322,2.4411,2.7284,3.0019,3.3479,3.6008], [35,1.6896,2.0301,2.4377,2.7238,2.9961,3.3400,3.5912], [36,1.6883,2.0281,2.4345,2.7195,2.9905,3.3326,3.5822], [37,1.6871,2.0262,2.4315,2.7154,2.9853,3.3256,3.5737], [38,1.6859,2.0244,2.4286,2.7115,2.9803,3.3190,3.5657], [39,1.6849,2.0227,2.4258,2.7079,2.9756,3.3128,3.5581], [40,1.6839,2.0211,2.4233,2.7045,2.9712,3.3069,3.5510], [41,1.6829,2.0196,2.4208,2.7012,2.9670,3.3013,3.5442], [42,1.6820,2.0181,2.4185,2.6981,2.9630,3.2959,3.5378], [43,1.6811,2.0167,2.4162,2.6951,2.9591,3.2909,3.5316], [44,1.6802,2.0154,2.4142,2.6923,2.9555,3.2861,3.5258], [45,1.6794,2.0141,2.4121,2.6896,2.9521,3.2815,3.5202], [46,1.6787,2.0129,2.4102,2.6870,2.9488,3.2771,3.5149], [47,1.6779,2.0117,2.4083,2.6846,2.9456,3.2729,3.5099], [48,1.6772,2.0106,2.4066,2.6822,2.9426,3.2689,3.5051], [49,1.6766,2.0096,2.4049,2.6800,2.9397,3.2651,3.5004], [50,1.6759,2.0086,2.4033,2.6778,2.9370,3.2614,3.4960], [51,1.6753,2.0076,2.4017,2.6757,2.9343,3.2579,3.4917], [52,1.6747,2.0066,2.4002,2.6737,2.9318,3.2545,3.4877], [53,1.6741,2.0057,2.3988,2.6718,2.9293,3.2513,3.4838], [54,1.6736,2.0049,2.3974,2.6700,2.9270,3.2482,3.4800], [55,1.6730,2.0041,2.3961,2.6682,2.9247,3.2451,3.4764], [56,1.6725,2.0032,2.3948,2.6665,2.9225,3.2423,3.4730], [57,1.6720,2.0025,2.3936,2.6649,2.9204,3.2394,3.4696], [58,1.6715,2.0017,2.3924,2.6633,2.9184,3.2368,3.4663], [59,1.6711,2.0010,2.3912,2.6618,2.9164,3.2342,3.4632], [60,1.6706,2.0003,2.3901,2.6603,2.9146,3.2317,3.4602], [61,1.6702,1.9996,2.3890,2.6589,2.9127,3.2293,3.4573], [62,1.6698,1.9990,2.3880,2.6575,2.9110,3.2269,3.4545], [63,1.6694,1.9983,2.3870,2.6561,2.9092,3.2247,3.4518], [64,1.6690,1.9977,2.3860,2.6549,2.9076,3.2225,3.4491], [65,1.6686,1.9971,2.3851,2.6536,2.9060,3.2204,3.4466], [66,1.6683,1.9966,2.3842,2.6524,2.9045,3.2184,3.4441], [67,1.6679,1.9960,2.3833,2.6512,2.9030,3.2164,3.4417], [68,1.6676,1.9955,2.3824,2.6501,2.9015,3.2144,3.4395], [69,1.6673,1.9950,2.3816,2.6490,2.9001,3.2126,3.4372], [70,1.6669,1.9944,2.3808,2.6479,2.8987,3.2108,3.4350], [71,1.6666,1.9939,2.3800,2.6468,2.8974,3.2090,3.4329], [72,1.6663,1.9935,2.3793,2.6459,2.8961,3.2073,3.4308], [73,1.6660,1.9930,2.3785,2.6449,2.8948,3.2056,3.4288], [74,1.6657,1.9925,2.3778,2.6439,2.8936,3.2040,3.4269], [75,1.6654,1.9921,2.3771,2.6430,2.8925,3.2025,3.4250], [76,1.6652,1.9917,2.3764,2.6421,2.8913,3.2010,3.4232], [77,1.6649,1.9913,2.3758,2.6412,2.8902,3.1995,3.4214], [78,1.6646,1.9909,2.3751,2.6404,2.8891,3.1980,3.4197], [79,1.6644,1.9904,2.3745,2.6395,2.8880,3.1966,3.4180], [80,1.6641,1.9901,2.3739,2.6387,2.8870,3.1953,3.4164], [81,1.6639,1.9897,2.3733,2.6379,2.8859,3.1939,3.4147], [82,1.6636,1.9893,2.3727,2.6371,2.8850,3.1926,3.4132], [83,1.6634,1.9889,2.3721,2.6364,2.8840,3.1913,3.4117], [84,1.6632,1.9886,2.3716,2.6356,2.8831,3.1901,3.4101], [85,1.6630,1.9883,2.3710,2.6349,2.8821,3.1889,3.4087], [86,1.6628,1.9879,2.3705,2.6342,2.8813,3.1877,3.4073], [87,1.6626,1.9876,2.3700,2.6335,2.8804,3.1866,3.4059], [88,1.6623,1.9873,2.3695,2.6328,2.8795,3.1854,3.4046], [89,1.6622,1.9870,2.3690,2.6322,2.8787,3.1844,3.4032], [90,1.6620,1.9867,2.3685,2.6316,2.8779,3.1833,3.4020], [91,1.6618,1.9864,2.3680,2.6309,2.8771,3.1822,3.4006], [92,1.6616,1.9861,2.3676,2.6303,2.8763,3.1812,3.3995], [93,1.6614,1.9858,2.3671,2.6297,2.8755,3.1802,3.3982], [94,1.6612,1.9855,2.3667,2.6292,2.8748,3.1792,3.3970], [95,1.6610,1.9852,2.3662,2.6286,2.8741,3.1782,3.3959], [96,1.6609,1.9850,2.3658,2.6280,2.8734,3.1773,3.3947], [97,1.6607,1.9847,2.3654,2.6275,2.8727,3.1764,3.3936], [98,1.6606,1.9845,2.3650,2.6269,2.8720,3.1755,3.3926], [99,1.6604,1.9842,2.3646,2.6264,2.8713,3.1746,3.3915], [100,1.6602,1.984,2.3642,2.6259,2.8706,3.1738,3.3905]