Questão Q2422202 - Estatística

Question

Tabelas para consultaTabela da distribuição t-studentGrau de liberdadeÁrea da cauda superior0,10,050,0250,010,00513,0786,31412,70631,82163,65721,8862,924,3036,9659,92531,6382,3533,1824,5415,84141,5332,1322,7763,7474,60451,4762,0152,5713,3654,03261,441,9432,4473,1433,70771,4151,8952,3652,9983,49981,3971,862,3062,8963,35591,3831,8332,2622,8213,25101,3721,8122,2282,7643,169111,3631,7962,2012,7183,106121,3561,7822,1792,6813,055131,351,7712,162,653,012141,3451,7612,1452,6242,977151,3411,7532,1312,6022,947161,3371,7462,122,5832,921171,3331,742,112,5672,898181,331,7342,1012,5522,878191,3281,7292,0932,5392,861201,3251,7252,0862,5282,845211,3231,7212,082,5182,831221,3211,7172,0742,5082,819231,3191,7142,0692,52,807241,3181,7112,0642,4922,797251,3161,7082,062,4852,787261,3151,7062,0562,4792,779271,3141,7032,0522,4732,771281,3131,7012,0482,4672,763291,3111,6992,0452,4622,756301,311,6972,0422,4572,75401,3031,6842,0212,4232,7041201,2891,6581,982,3582,6172001,2861,6531,9722,3452,601Tabela da distribuição Qui-quadrado	Probabilidade (Xn2​≥x)Grau de liberdadeÁrea na cauda superior0,250,10,050,0250,010,0050,00250,0010,000511,322,713,845,026,637,889,1410,8312,1222,774,615,997,389,2110,611,9813,8215,234,116,257,819,3511,3412,8414,3216,2717,7345,397,789,4911,1413,2814,8616,4218,472056,639,2411,0712,8315,0916,7518,3920,5222,1167,8410,6412,5914,4516,8118,5520,2522,4624,179,0412,0214,0716,0118,4820,2822,0424,3226,02810,2213,3615,5117,5320,0921,9523,7726,1227,87911,3914,6816,9219,0221,6723,5925,4627,8829,671012,5515,9918,3120,4823,2125,1927,1129,5931,421113,717,2819,6821,9224,7226,7628,7331,2633,141214,8518,5521,0323,3426,2228,330,3232,9134,821315,9819,8122,3624,7427,6929,8231,8834,5336,481417,1221,0623,6826,1229,1431,3233,4336,1238,111518,2522,312527,4930,5832,834,9537,739,721619,3723,5426,328,853234,2736,4639,2541,311720,4924,7727,5930,1933,4135,7237,9540,7942,881821,625,9928,8731,5334,8137,1639,4242,3144,431922,7227,230,1432,8536,1938,5840,8843,8245,972023,8328,4131,4134,1737,574042,3445,3147,52124,9329,6232,6735,4838,9341,443,7846,849,012226,0430,8133,9236,7840,2942,845,248,2750,512327,1432,0135,1738,0841,6444,1846,6249,73522428,2433,236,4239,3642,9845,5648,0351,1853,482529,3434,3837,6540,6544,3146,9349,4452,6254,952630,4335,5638,8941,9245,6448,2950,8354,0556,412731,5336,7440,1143,1946,9649,6452,2255,4857,862832,6237,9241,3444,4648,2850,9953,5956,8959,32933,7139,0942,5645,7249,5952,3454,9758,360,733034,840,2643,7746,9850,8953,6756,3359,762,163540,2246,0649,853,257,3460,2763,0866,6269,24045,6251,8155,7659,3463,6966,7769,773,476,094550,9857,5161,6665,4169,9673,1776,2280,0882,885056,3363,1767,571,4276,1579,4982,6686,6689,56100109,14118,5124,34129,56135,81140,17144,29149,45153,17Tabela da distribuição Normal padrãoProbabilidade da distribuição normal padrão acumulada na cauda superior - Prob(Z>Z0)Z0Segunda decimal de Z0.00,010,020,030,040,050,060,070,080,090,000,50,4960,4920,4880,4840,48010,47610,47210,46810,46410,100,46020,45620,45220,44830,44430,44040,43640,43250,42860,42470,200,42070,41680,41290,4090,40520,40130,39740,39360,38970,38590,300,38210,37830,37450,37070,36690,36320,35940,35570,3520,34830,400,34460,34090,33720,33360,330,32640,32280,31920,31560,31210,500,30850,3050,30150,29810,29460,29120,28770,28430,2810,27760,600,27430,27090,26760,26430,26110,25780,25460,25140,24830,24510,700,2420,23890,23580,23270,22960,22660,22360,22060,21770,21480,800,21190,2090,20610,20330,20050,19770,19490,19220,18940,18670,900,18410,18140,17880,17620,17360,17110,16850,1660,16350,16111,000,15870,15620,15390,15150,14920,14690,14460,14230,14010,13791,100,13570,13350,13140,12920,12710,12510,1230,1210,1190,1171,200,11510,11310,11120,10930,10750,10560,10380,1020,10030,09851,300,09680,09510,09340,09180,09010,08850,08690,08530,08380,08231,400,08080,07930,07780,07640,07490,07350,07210,07080,06940,06811,500,06680,06550,06430,0630,06180,06060,05940,05820,05710,05591,600,05480,05370,05260,05160,05050,04950,04850,04750,04650,04551,700,04460,04360,04270,04180,04090,04010,03920,03840,03750,03671,800,03590,03510,03440,03360,03290,03220,03140,03070,03010,02941,900,02870,02810,02740,02680,02620,02560,0250,02440,02390,02332,000,02280,02220,02170,02120,02070,02020,01970,01920,01880,01832,100,01790,01740,0170,01660,01620,01580,01540,0150,01460,01432,200,01390,01360,01320,01290,01250,01220,01190,01160,01130,0112,300,01070,01040,01020,00990,00960,00940,00910,00890,00870,00842,400,00820,0080,00780,00750,00730,00710,00690,00680,00660,00642,500,00620,0060,00590,00570,00550,00540,00520,00510,00490,00482,600,00470,00450,00440,00430,00410,0040,00390,00380,00370,00362,700,00350,00340,00330,00320,00310,0030,00290,00280,00270,00262,800,00260,00250,00240,00230,00230,00220,00210,00210,0020,00192,900,00190,00180,00180,00170,00160,00160,00150,00150,00140,00143,000,00130,00130,00130,00120,00120,00110,00110,00110,0010,0013,100,0010,00090,00090,00090,00080,00080,00080,00080,00070,00073,200,00070,00070,00060,00060,00060,00060,00060,00050,00050,00053,300,00050,00050,00050,00040,00040,00040,00040,00040,00040,00033,400,00030,00030,00030,00030,00030,00030,00030,00030,00030,00023,500,00020,00020,00020,00020,00020,00020,00020,00020,00020,00023,600,00020,00020,00010,00010,00010,00010,00010,00010,00010,00013,700,00010,00010,00010,00010,00010,00010,00010,00010,00010,00013,800,00010,00010,00010,00010,00010,00010,00010,00010,00010,00013,900,00000,00000,00000,00000,00000,00000,00000,00000,00000,00004,000,00000,00000,00000,00000,00000,00000,00000,00000,00000,0000 Um experimento de campo para aprimoramento do combate ao ataque de formigas testou o efeito de um novo modelo de porta-iscas.O experimento consistiu em espalhar 20 porta-iscas do novo modelo e, após um período de tempo, verificou-se o consumo das iscas em cada um dos recipientes.Os resultados foram computados do seguinte modo: quando o consumo das iscas foi maior que a mediana histórica do consumo, registrou-se um sinal “+” (positivo), quando menor, um sinal “-” negativo e, se o consumo foi igual ao consumo mediano, o registrado foi um ponto “.”.Os resultados do experimento foram: 15 positivos, 3 negativos e 2 pontos.Para auxiliar nos cálculos, segue a tabela que apresenta os valores de 0,515; 0,518 e 0,520 multiplicados por uma constante k:k0,5150,5180,52010,0000310,0000040,00000130,0000920,0000110,00000350,0001530,0000190,000005100,0003050,0000380,000010800,0024410,0003050,0000761000,0030520,0003810,0000959000,0274660,0034330,000858Utilizando o nível de 5% de significância, a conclusão do teste de hipótese é:

Gran Questões · Accepted Answer

com probabilidade aproximadamente de 0,00377, há fortes evidências para rejeitar H0​, ou seja, o novo modelo propicia uma mediana de consumo de iscas maior que a mediana histórica;

Gran Questões · Answer

com probabilidade aproximadamente de 0,00377, há fortes evidências para rejeitar H0​, ou seja, o consumo mediano no novo modelo não difere estatisticamente da mediana histórica;

Gran Questões · Answer

com probabilidade aproximadamente de 0,0276, há fortes evidências para rejeitar H0​, ou seja, o novo modelo propicia uma mediana de consumo de iscas maior que a mediana histórica;

Gran Questões · Answer

com probabilidade aproximadamente de 0,0276, não há evidências para rejeitar H0​, ou seja, o novo modelo propicia uma mediana de consumo de iscas menor que a mediana histórica;

Gran Questões · Answer

com probabilidade aproximadamente de 0,0276, há fortes evidências para rejeitar H0​, ou seja, o novo modelo propicia uma mediana de consumo de iscas menor que a mediana histórica.

Probabilidade da distribuição normal padrão acumulada na cauda superior - Prob(Z>Z₀)
Z₀	Segunda decimal de Z0
.	0	0,01	0,02	0,03	0,04	0,05	0,06	0,07	0,08	0,09
0,00	0,5	0,496	0,492	0,488	0,484	0,4801	0,4761	0,4721	0,4681	0,4641
0,10	0,4602	0,4562	0,4522	0,4483	0,4443	0,4404	0,4364	0,4325	0,4286	0,4247
0,20	0,4207	0,4168	0,4129	0,409	0,4052	0,4013	0,3974	0,3936	0,3897	0,3859
0,30	0,3821	0,3783	0,3745	0,3707	0,3669	0,3632	0,3594	0,3557	0,352	0,3483
0,40	0,3446	0,3409	0,3372	0,3336	0,33	0,3264	0,3228	0,3192	0,3156	0,3121
0,50	0,3085	0,305	0,3015	0,2981	0,2946	0,2912	0,2877	0,2843	0,281	0,2776
0,60	0,2743	0,2709	0,2676	0,2643	0,2611	0,2578	0,2546	0,2514	0,2483	0,2451
0,70	0,242	0,2389	0,2358	0,2327	0,2296	0,2266	0,2236	0,2206	0,2177	0,2148
0,80	0,2119	0,209	0,2061	0,2033	0,2005	0,1977	0,1949	0,1922	0,1894	0,1867
0,90	0,1841	0,1814	0,1788	0,1762	0,1736	0,1711	0,1685	0,166	0,1635	0,1611
1,00	0,1587	0,1562	0,1539	0,1515	0,1492	0,1469	0,1446	0,1423	0,1401	0,1379
1,10	0,1357	0,1335	0,1314	0,1292	0,1271	0,1251	0,123	0,121	0,119	0,117
1,20	0,1151	0,1131	0,1112	0,1093	0,1075	0,1056	0,1038	0,102	0,1003	0,0985
1,30	0,0968	0,0951	0,0934	0,0918	0,0901	0,0885	0,0869	0,0853	0,0838	0,0823
1,40	0,0808	0,0793	0,0778	0,0764	0,0749	0,0735	0,0721	0,0708	0,0694	0,0681
1,50	0,0668	0,0655	0,0643	0,063	0,0618	0,0606	0,0594	0,0582	0,0571	0,0559
1,60	0,0548	0,0537	0,0526	0,0516	0,0505	0,0495	0,0485	0,0475	0,0465	0,0455
1,70	0,0446	0,0436	0,0427	0,0418	0,0409	0,0401	0,0392	0,0384	0,0375	0,0367
1,80	0,0359	0,0351	0,0344	0,0336	0,0329	0,0322	0,0314	0,0307	0,0301	0,0294
1,90	0,0287	0,0281	0,0274	0,0268	0,0262	0,0256	0,025	0,0244	0,0239	0,0233
2,00	0,0228	0,0222	0,0217	0,0212	0,0207	0,0202	0,0197	0,0192	0,0188	0,0183
2,10	0,0179	0,0174	0,017	0,0166	0,0162	0,0158	0,0154	0,015	0,0146	0,0143
2,20	0,0139	0,0136	0,0132	0,0129	0,0125	0,0122	0,0119	0,0116	0,0113	0,011
2,30	0,0107	0,0104	0,0102	0,0099	0,0096	0,0094	0,0091	0,0089	0,0087	0,0084
2,40	0,0082	0,008	0,0078	0,0075	0,0073	0,0071	0,0069	0,0068	0,0066	0,0064
2,50	0,0062	0,006	0,0059	0,0057	0,0055	0,0054	0,0052	0,0051	0,0049	0,0048
2,60	0,0047	0,0045	0,0044	0,0043	0,0041	0,004	0,0039	0,0038	0,0037	0,0036
2,70	0,0035	0,0034	0,0033	0,0032	0,0031	0,003	0,0029	0,0028	0,0027	0,0026
2,80	0,0026	0,0025	0,0024	0,0023	0,0023	0,0022	0,0021	0,0021	0,002	0,0019
2,90	0,0019	0,0018	0,0018	0,0017	0,0016	0,0016	0,0015	0,0015	0,0014	0,0014
3,00	0,0013	0,0013	0,0013	0,0012	0,0012	0,0011	0,0011	0,0011	0,001	0,001
3,10	0,001	0,0009	0,0009	0,0009	0,0008	0,0008	0,0008	0,0008	0,0007	0,0007
3,20	0,0007	0,0007	0,0006	0,0006	0,0006	0,0006	0,0006	0,0005	0,0005	0,0005
3,30	0,0005	0,0005	0,0005	0,0004	0,0004	0,0004	0,0004	0,0004	0,0004	0,0003
3,40	0,0003	0,0003	0,0003	0,0003	0,0003	0,0003	0,0003	0,0003	0,0003	0,0002
3,50	0,0002	0,0002	0,0002	0,0002	0,0002	0,0002	0,0002	0,0002	0,0002	0,0002
3,60	0,0002	0,0002	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001
3,70	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001
3,80	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001	0,0001
3,90	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000
4,00	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000	0,0000

Grau de liberdade	Área da cauda superior
Grau de liberdade	0,1	0,05	0,025	0,01	0,005
1	3,078	6,314	12,706	31,821	63,657
2	1,886	2,92	4,303	6,965	9,925
3	1,638	2,353	3,182	4,541	5,841
4	1,533	2,132	2,776	3,747	4,604
5	1,476	2,015	2,571	3,365	4,032
6	1,44	1,943	2,447	3,143	3,707
7	1,415	1,895	2,365	2,998	3,499
8	1,397	1,86	2,306	2,896	3,355
9	1,383	1,833	2,262	2,821	3,25
10	1,372	1,812	2,228	2,764	3,169
11	1,363	1,796	2,201	2,718	3,106
12	1,356	1,782	2,179	2,681	3,055
13	1,35	1,771	2,16	2,65	3,012
14	1,345	1,761	2,145	2,624	2,977
15	1,341	1,753	2,131	2,602	2,947
16	1,337	1,746	2,12	2,583	2,921
17	1,333	1,74	2,11	2,567	2,898
18	1,33	1,734	2,101	2,552	2,878
19	1,328	1,729	2,093	2,539	2,861
20	1,325	1,725	2,086	2,528	2,845
21	1,323	1,721	2,08	2,518	2,831
22	1,321	1,717	2,074	2,508	2,819
23	1,319	1,714	2,069	2,5	2,807
24	1,318	1,711	2,064	2,492	2,797
25	1,316	1,708	2,06	2,485	2,787
26	1,315	1,706	2,056	2,479	2,779
27	1,314	1,703	2,052	2,473	2,771
28	1,313	1,701	2,048	2,467	2,763
29	1,311	1,699	2,045	2,462	2,756
30	1,31	1,697	2,042	2,457	2,75
40	1,303	1,684	2,021	2,423	2,704
120	1,289	1,658	1,98	2,358	2,617
200	1,286	1,653	1,972	2,345	2,601

Grau de liberdade	Área na cauda superior
Grau de liberdade	0,25	0,1	0,05	0,025	0,01	0,005	0,0025	0,001	0,0005
1	1,32	2,71	3,84	5,02	6,63	7,88	9,14	10,83	12,12
2	2,77	4,61	5,99	7,38	9,21	10,6	11,98	13,82	15,2
3	4,11	6,25	7,81	9,35	11,34	12,84	14,32	16,27	17,73
4	5,39	7,78	9,49	11,14	13,28	14,86	16,42	18,47	20
5	6,63	9,24	11,07	12,83	15,09	16,75	18,39	20,52	22,11
6	7,84	10,64	12,59	14,45	16,81	18,55	20,25	22,46	24,1
7	9,04	12,02	14,07	16,01	18,48	20,28	22,04	24,32	26,02
8	10,22	13,36	15,51	17,53	20,09	21,95	23,77	26,12	27,87
9	11,39	14,68	16,92	19,02	21,67	23,59	25,46	27,88	29,67
10	12,55	15,99	18,31	20,48	23,21	25,19	27,11	29,59	31,42
11	13,7	17,28	19,68	21,92	24,72	26,76	28,73	31,26	33,14
12	14,85	18,55	21,03	23,34	26,22	28,3	30,32	32,91	34,82
13	15,98	19,81	22,36	24,74	27,69	29,82	31,88	34,53	36,48
14	17,12	21,06	23,68	26,12	29,14	31,32	33,43	36,12	38,11
15	18,25	22,31	25	27,49	30,58	32,8	34,95	37,7	39,72
16	19,37	23,54	26,3	28,85	32	34,27	36,46	39,25	41,31
17	20,49	24,77	27,59	30,19	33,41	35,72	37,95	40,79	42,88
18	21,6	25,99	28,87	31,53	34,81	37,16	39,42	42,31	44,43
19	22,72	27,2	30,14	32,85	36,19	38,58	40,88	43,82	45,97
20	23,83	28,41	31,41	34,17	37,57	40	42,34	45,31	47,5
21	24,93	29,62	32,67	35,48	38,93	41,4	43,78	46,8	49,01
22	26,04	30,81	33,92	36,78	40,29	42,8	45,2	48,27	50,51
23	27,14	32,01	35,17	38,08	41,64	44,18	46,62	49,73	52
24	28,24	33,2	36,42	39,36	42,98	45,56	48,03	51,18	53,48
25	29,34	34,38	37,65	40,65	44,31	46,93	49,44	52,62	54,95
26	30,43	35,56	38,89	41,92	45,64	48,29	50,83	54,05	56,41
27	31,53	36,74	40,11	43,19	46,96	49,64	52,22	55,48	57,86
28	32,62	37,92	41,34	44,46	48,28	50,99	53,59	56,89	59,3
29	33,71	39,09	42,56	45,72	49,59	52,34	54,97	58,3	60,73
30	34,8	40,26	43,77	46,98	50,89	53,67	56,33	59,7	62,16
35	40,22	46,06	49,8	53,2	57,34	60,27	63,08	66,62	69,2
40	45,62	51,81	55,76	59,34	63,69	66,77	69,7	73,4	76,09
45	50,98	57,51	61,66	65,41	69,96	73,17	76,22	80,08	82,88
50	56,33	63,17	67,5	71,42	76,15	79,49	82,66	86,66	89,56
100	109,14	118,5	124,34	129,56	135,81	140,17	144,29	149,45	153,17

k	0,5¹⁵	0,5¹⁸	0,5²⁰
1	0,000031	0,000004	0,000001
3	0,000092	0,000011	0,000003
5	0,000153	0,000019	0,000005
10	0,000305	0,000038	0,000010
80	0,002441	0,000305	0,000076
100	0,003052	0,000381	0,000095
900	0,027466	0,003433	0,000858

Um experimento de campo para aprimoramento do combate ao...