As tabelas Distribuição Normal Padrão Acumulada e Distribuição t de Student estão no final deste caderno.Tabela I: Distribuição Normal Padrão Acumulada Fornece Φ(z) = P(-∞ < Z < z), para todo z, de 0,01 em 0,01, desde z = 0,00 até z = 3,59A distribuição de Z é Normal(0;1)z0,000,010,020,030,040,050,060,070,080,090,00,500,5040,5080,5120,5160,51990,52390,52790,53190,53590,10,53980,54380,54780,55170,55570,55960,56360,56750,57140,57530,20,57930,58320,58710,5910,59480,59870,60260,60640,61030,61410,30,61790,62170,62550,62930,63310,63680,64060,64430,64800,65170,40,65540,65910,66280,66640,6700,67360,67720,68080,68440,68790,50,69150,69500,69850,70190,70540,70880,71230,71570,71900,72240,60,72570,72910,73240,73570,73890,74220,74540,74860,75170,75490,70,75800,76110,76420,76730,77040,77340,77640,77940,78230,78520,80,78810,7910,79390,79670,79950,80230,80510,80780,81060,81330,90,81590,81860,82120,82380,82640,82890,83150,83400,83650,83891,00,84130,84380,84610,84850,85080,85310,85540,85770,85990,86211,10,86430,86650,86860,87080,87290,87490,87700,87900,88100,88301,20,88490,88690,88880,89070,89250,89440,89620,89800,89970,90151,30,90320,90490,90660,90820,90990,91150,91310,91470,91620,91771,40,91920,92070,92220,92360,92510,92650,92790,92920,93060,93191,50,93320,93450,93570,93700,93820,93940,94060,94180,94290,94411,60,94520,94630,94740,94840,94950,95050,95150,95250,95350,95451,70,95540,95640,95730,95820,95910,95990,96080,96160,96250,96331,80,96410,96490,96560,96640,96710,96780,96860,96930,96990,97061,90,97130,97190,97260,97320,97380,97440,97500,97560,97610,97672,00,97720,97780,97830,97880,97930,97980,98030,98080,98120,98172,10,98210,98260,98300,98340,98380,98420,98460,98500,98540,98572,20,98610,98640,98680,98710,98750,98780,98810,98840,98870,98902,30,98930,98960,98980,99010,99040,99060,99090,99110,99130,99162,40,99180,99200,99220,99250,99270,99290,99310,99320,99340,99362,50,99380,99400,99410,99430,99450,99460,99480,99490,99510,99522,60,99530,99550,99560,99570,99590,9960,99610,99620,99630,99642,70,99650,99660,99670,99680,99690,9970,99710,99720,99730,99742,80,99740,99750,99760,99770,99770,99780,99790,99790,99800,99812,90,99810,99820,99820,99830,99840,99840,99850,99850,99860,99863,00,99870,99870,99870,99880,99880,99890,99890,99890,99900,99903,10,99900,99910,99910,99910,99920,99920,99920,99920,99930,99933,20,99930,99930,99940,99940,99940,99940,99940,99950,99950,99953,30,99950,99950,99950,99960,99960,99960,99960,99960,99960,99973,40,99970,99970,99970,99970,99970,99970,99970,99970,99970,99983,50,99980,99980,99980,99980,99980,99980,99980,99980,99980,9998Obs.: Se z < 0, então Φ(z) = P(−∞ < Z < z) = 1 − Φ(−z).Tabela II: Distribuição t de StudentFornece o quantil tp em função do no de g.l. ν (linha) e de p = P(T≤tp) (coluna) T tem distribuição t de Student com ν g.l.ν \ p0,60,70,80,90,9750,980,990,99510,3250,7271,3763,07812,70615,89531,82163,65720,2890,6171,0611,8864,3034,8496,9659,92530,2770,5840,9781,6383,1823,4824,5415,84140,2710,5690,9411,5332,7762,9993,7474,60450,2670,5590,921,4762,5712,7573,3654,03260,2650,5530,9061,442,4472,6123,1433,70770,2630,5490,8961,4152,3652,5172,9983,49980,2620,5460,8891,3972,3062,4492,8963,35590,2610,5430,8831,3832,2622,3982,8213,25100,260,5420,8791,3722,2282,3592,7643,169110,260,540,8761,3632,2012,3282,7183,106120,2590,5390,8731,3562,1792,3032,6813,055130,2590,5380,871,352,162,2822,653,012140,2580,5370,8681,3452,1452,2642,6242,977150,2580,5360,8661,3412,1312,2492,6022,947160,2580,5350,8651,3372,122,2352,5832,921170,2570,5340,8631,3332,112,2242,5672,898180,2570,5340,8621,332,1012,2142,5522,878190,2570,5330,8611,3282,0932,2052,5392,861200,2570,5330,861,3252,0862,1972,5282,845210,2570,5320,8591,3232,082,1892,5182,831220,2560,5320,8581,3212,0742,1832,5082,819230,2560,5320,8581,3192,0692,1772,52,807240,2560,5310,8571,3182,0642,1722,4922,797250,2560,5310,8561,3162,062,1672,4852,787260,2560,5310,8561,3152,0562,1622,4792,779270,2560,5310,8551,3142,0522,1582,4732,771280,2560,530,8551,3132,0482,1542,4672,763290,2560,530,8541,3112,0452,152,4622,756300,2560,530,8541,312,0422,1472,4572,75400,2550,5290,8511,3032,0212,1232,4232,704600,2540,5270,8481,29622,0992,392,661200,2540,5260,8451,2891,982,0762,3582,617∞0,2530,5240,8421,2821,962,0542,3262,576Obs.: Para um certo ν fixado, se p 22.O teste uniformemente mais poderoso de tamanho α = 0,05 rejeitará a hipótese nula se o valor da média amostral for

Uma amostra aleatória de tamanho 100 de uma distribuição...

Q1920978

Estatística Testes de Hipóteses para a Média

Ano: 2014

Banca: Fundação Getúlio Vargas - FGV

Prova: FGV - SES AM - Estatístico - 2014

As tabelas Distribuição Normal Padrão Acumulada e Distribuição t de Student estão no final deste caderno.

Tabela I: Distribuição Normal Padrão Acumulada

Fornece Φ(z) = P(-∞ < Z < z), para todo z, de 0,01 em 0,01, desde z = 0,00 até z = 3,59

A distribuição de Z é Normal(0;1)

Imagem associada para resolução da questão

z	0,00	0,01	0,02	0,03	0,04	0,05	0,06	0,07	0,08	0,09
0,0	0,50	0,504	0,508	0,512	0,516	0,5199	0,5239	0,5279	0,5319	0,5359
0,1	0,5398	0,5438	0,5478	0,5517	0,5557	0,5596	0,5636	0,5675	0,5714	0,5753
0,2	0,5793	0,5832	0,5871	0,591	0,5948	0,5987	0,6026	0,6064	0,6103	0,6141
0,3	0,6179	0,6217	0,6255	0,6293	0,6331	0,6368	0,6406	0,6443	0,6480	0,6517
0,4	0,6554	0,6591	0,6628	0,6664	0,670	0,6736	0,6772	0,6808	0,6844	0,6879
0,5	0,6915	0,6950	0,6985	0,7019	0,7054	0,7088	0,7123	0,7157	0,7190	0,7224
0,6	0,7257	0,7291	0,7324	0,7357	0,7389	0,7422	0,7454	0,7486	0,7517	0,7549
0,7	0,7580	0,7611	0,7642	0,7673	0,7704	0,7734	0,7764	0,7794	0,7823	0,7852
0,8	0,7881	0,791	0,7939	0,7967	0,7995	0,8023	0,8051	0,8078	0,8106	0,8133
0,9	0,8159	0,8186	0,8212	0,8238	0,8264	0,8289	0,8315	0,8340	0,8365	0,8389
1,0	0,8413	0,8438	0,8461	0,8485	0,8508	0,8531	0,8554	0,8577	0,8599	0,8621
1,1	0,8643	0,8665	0,8686	0,8708	0,8729	0,8749	0,8770	0,8790	0,8810	0,8830
1,2	0,8849	0,8869	0,8888	0,8907	0,8925	0,8944	0,8962	0,8980	0,8997	0,9015
1,3	0,9032	0,9049	0,9066	0,9082	0,9099	0,9115	0,9131	0,9147	0,9162	0,9177
1,4	0,9192	0,9207	0,9222	0,9236	0,9251	0,9265	0,9279	0,9292	0,9306	0,9319
1,5	0,9332	0,9345	0,9357	0,9370	0,9382	0,9394	0,9406	0,9418	0,9429	0,9441
1,6	0,9452	0,9463	0,9474	0,9484	0,9495	0,9505	0,9515	0,9525	0,9535	0,9545
1,7	0,9554	0,9564	0,9573	0,9582	0,9591	0,9599	0,9608	0,9616	0,9625	0,9633
1,8	0,9641	0,9649	0,9656	0,9664	0,9671	0,9678	0,9686	0,9693	0,9699	0,9706
1,9	0,9713	0,9719	0,9726	0,9732	0,9738	0,9744	0,9750	0,9756	0,9761	0,9767
2,0	0,9772	0,9778	0,9783	0,9788	0,9793	0,9798	0,9803	0,9808	0,9812	0,9817
2,1	0,9821	0,9826	0,9830	0,9834	0,9838	0,9842	0,9846	0,9850	0,9854	0,9857
2,2	0,9861	0,9864	0,9868	0,9871	0,9875	0,9878	0,9881	0,9884	0,9887	0,9890
2,3	0,9893	0,9896	0,9898	0,9901	0,9904	0,9906	0,9909	0,9911	0,9913	0,9916
2,4	0,9918	0,9920	0,9922	0,9925	0,9927	0,9929	0,9931	0,9932	0,9934	0,9936
2,5	0,9938	0,9940	0,9941	0,9943	0,9945	0,9946	0,9948	0,9949	0,9951	0,9952
2,6	0,9953	0,9955	0,9956	0,9957	0,9959	0,996	0,9961	0,9962	0,9963	0,9964
2,7	0,9965	0,9966	0,9967	0,9968	0,9969	0,997	0,9971	0,9972	0,9973	0,9974
2,8	0,9974	0,9975	0,9976	0,9977	0,9977	0,9978	0,9979	0,9979	0,9980	0,9981
2,9	0,9981	0,9982	0,9982	0,9983	0,9984	0,9984	0,9985	0,9985	0,9986	0,9986
3,0	0,9987	0,9987	0,9987	0,9988	0,9988	0,9989	0,9989	0,9989	0,9990	0,9990
3,1	0,9990	0,9991	0,9991	0,9991	0,9992	0,9992	0,9992	0,9992	0,9993	0,9993
3,2	0,9993	0,9993	0,9994	0,9994	0,9994	0,9994	0,9994	0,9995	0,9995	0,9995
3,3	0,9995	0,9995	0,9995	0,9996	0,9996	0,9996	0,9996	0,9996	0,9996	0,9997
3,4	0,9997	0,9997	0,9997	0,9997	0,9997	0,9997	0,9997	0,9997	0,9997	0,9998
3,5	0,9998	0,9998	0,9998	0,9998	0,9998	0,9998	0,9998	0,9998	0,9998	0,9998

Obs.: Se z < 0, então Φ(z) = P(−∞ < Z < z) = 1 − Φ(−z).

Tabela II: Distribuição t de Student

Imagem associada para resolução da questão

Fornece o quantil t_p em função do n^o de g.l. ν (linha) e de p = P(T≤t_p) (coluna) T tem distribuição t de Student com ν g.l.

ν \ p	0,6	0,7	0,8	0,9	0,975	0,98	0,99	0,995
1	0,325	0,727	1,376	3,078	12,706	15,895	31,821	63,657
2	0,289	0,617	1,061	1,886	4,303	4,849	6,965	9,925
3	0,277	0,584	0,978	1,638	3,182	3,482	4,541	5,841
4	0,271	0,569	0,941	1,533	2,776	2,999	3,747	4,604
5	0,267	0,559	0,92	1,476	2,571	2,757	3,365	4,032
6	0,265	0,553	0,906	1,44	2,447	2,612	3,143	3,707
7	0,263	0,549	0,896	1,415	2,365	2,517	2,998	3,499
8	0,262	0,546	0,889	1,397	2,306	2,449	2,896	3,355
9	0,261	0,543	0,883	1,383	2,262	2,398	2,821	3,25
10	0,26	0,542	0,879	1,372	2,228	2,359	2,764	3,169
11	0,26	0,54	0,876	1,363	2,201	2,328	2,718	3,106
12	0,259	0,539	0,873	1,356	2,179	2,303	2,681	3,055
13	0,259	0,538	0,87	1,35	2,16	2,282	2,65	3,012
14	0,258	0,537	0,868	1,345	2,145	2,264	2,624	2,977
15	0,258	0,536	0,866	1,341	2,131	2,249	2,602	2,947
16	0,258	0,535	0,865	1,337	2,12	2,235	2,583	2,921
17	0,257	0,534	0,863	1,333	2,11	2,224	2,567	2,898
18	0,257	0,534	0,862	1,33	2,101	2,214	2,552	2,878
19	0,257	0,533	0,861	1,328	2,093	2,205	2,539	2,861
20	0,257	0,533	0,86	1,325	2,086	2,197	2,528	2,845
21	0,257	0,532	0,859	1,323	2,08	2,189	2,518	2,831
22	0,256	0,532	0,858	1,321	2,074	2,183	2,508	2,819
23	0,256	0,532	0,858	1,319	2,069	2,177	2,5	2,807
24	0,256	0,531	0,857	1,318	2,064	2,172	2,492	2,797
25	0,256	0,531	0,856	1,316	2,06	2,167	2,485	2,787
26	0,256	0,531	0,856	1,315	2,056	2,162	2,479	2,779
27	0,256	0,531	0,855	1,314	2,052	2,158	2,473	2,771
28	0,256	0,53	0,855	1,313	2,048	2,154	2,467	2,763
29	0,256	0,53	0,854	1,311	2,045	2,15	2,462	2,756
30	0,256	0,53	0,854	1,31	2,042	2,147	2,457	2,75
40	0,255	0,529	0,851	1,303	2,021	2,123	2,423	2,704
60	0,254	0,527	0,848	1,296	2	2,099	2,39	2,66
120	0,254	0,526	0,845	1,289	1,98	2,076	2,358	2,617
∞	0,253	0,524	0,842	1,282	1,96	2,054	2,326	2,576

Obs.: Para um certo ν fixado, se p < 0,50, t_p = − t_1-p.

Uma amostra aleatória de tamanho 100 de uma distribuição normal com média μ desconhecida e variância 100, será observada para testar H₀ : μ ≤ 22 versus H1: μ > 22.

O teste uniformemente mais poderoso de tamanho α = 0,05 rejeitará a hipótese nula se o valor da média amostral for

menor do que 23,64.

menor do que 23,96.

maior do que 24,50.

maior do que 23,96.

maior do que 23,64.

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