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3

2,5 puntos
Según un estudio realizado a los egresados de una universidad sobre su incorporación al mercado laboral, la mitad de los encuestados encontraron trabajo relacionado con sus estudios, el 35%35\% encontraron trabajo no relacionado con sus estudios y el resto no encontraron trabajo. El 85%85\% de los que encontraron trabajo relacionado con sus estudios, el 40%40\% de los que encontraron trabajo no relacionado con sus estudios y el 10%10\% de los que no encontraron trabajo, tenían titulación de máster. Se elige un egresado al azar.
i
Calcule la probabilidad de que no tenga titulación de máster.1,25 pts
ii
Sabiendo que tiene titulación de máster, calcule la probabilidad de que no encontrara trabajo.1,25 pts

Formulario

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Tabla de la distribución normal estándar Z∼N(0,1)Z \sim N(0,1) P(Z<k)=12π∫−∞ke−t2/2 dtP(Z < k) = \dfrac{1}{\sqrt{2\pi}}\displaystyle\int_{-\infty}^{k} e^{-t^2/2}\,dt
Densidad de la normal estándar y función de distribución, con el área hasta k sombreada 1 1 0,5 0,5 k k
kk01
−3,50,00020,0002
−3,40,00030,0003
−3,30,00050,0005
−3,20,00070,0007
−3,10,00100,0009
−3,00,00130,0013
−2,90,00190,0018
−2,80,00260,0025
−2,70,00350,0034
−2,60,00470,0045
−2,50,00620,0060
−2,40,00820,0080
−2,30,01070,0104
−2,20,01390,0136
−2,10,01790,0174
−2,00,02280,0222
−1,90,02870,0281
−1,80,03590,0351
−1,70,04460,0436
−1,60,05480,0537
−1,50,06680,0655
−1,40,08080,0793
−1,30,09680,0951
−1,20,11510,1131
−1,10,13570,1335
−1,00,15870,1562
−0,90,18410,1814
−0,80,21190,2090
−0,70,24200,2389
−0,60,27430,2709
−0,50,30850,3050
−0,40,34460,3409
−0,30,38210,3783
−0,20,42070,4168
−0,10,46020,4562
−0,00,50000,4960
kk01
0,00,50000,5040
0,10,53980,5438
0,20,57930,5832
0,30,61790,6217
0,40,65540,6591
0,50,69150,6950
0,60,72570,7291
0,70,75800,7611
0,80,78810,7910
0,90,81590,8186
1,00,84130,8438
1,10,86430,8665
1,20,88490,8869
1,30,90320,9049
1,40,91920,9207
1,50,93320,9345
1,60,94520,9463
1,70,95540,9564
1,80,96410,9649
1,90,97130,9719
2,00,97720,9778
2,10,98210,9826
2,20,98610,9864
2,30,98930,9896
2,40,99180,9920
2,50,99380,9940
2,60,99530,9955
2,70,99650,9966
2,80,99740,9975
2,90,99810,9982
3,00,99870,9987
3,10,99900,9991
3,20,99930,9993
3,30,99950,9995
3,40,99970,9997
3,50,99980,9998
kk23
−3,50,00020,0002
−3,40,00030,0003
−3,30,00050,0004
−3,20,00060,0006
−3,10,00090,0009
−3,00,00130,0012
−2,90,00180,0017
−2,80,00240,0023
−2,70,00330,0032
−2,60,00440,0043
−2,50,00590,0057
−2,40,00780,0075
−2,30,01020,0099
−2,20,01320,0129
−2,10,01700,0166
−2,00,02170,0212
−1,90,02740,0268
−1,80,03440,0336
−1,70,04270,0418
−1,60,05260,0516
−1,50,06430,0630
−1,40,07780,0764
−1,30,09340,0918
−1,20,11120,1093
−1,10,13140,1292
−1,00,15390,1515
−0,90,17880,1762
−0,80,20610,2033
−0,70,23580,2327
−0,60,26760,2643
−0,50,30150,2981
−0,40,33720,3336
−0,30,37450,3707
−0,20,41290,4090
−0,10,45220,4483
−0,00,49200,4880
kk23
0,00,50800,5120
0,10,54780,5517
0,20,58710,5910
0,30,62550,6293
0,40,66280,6664
0,50,69850,7019
0,60,73240,7357
0,70,76420,7673
0,80,79390,7967
0,90,82120,8238
1,00,84610,8485
1,10,86860,8708
1,20,88880,8907
1,30,90660,9082
1,40,92220,9236
1,50,93570,9370
1,60,94740,9484
1,70,95730,9582
1,80,96560,9664
1,90,97260,9732
2,00,97830,9788
2,10,98300,9834
2,20,98680,9871
2,30,98980,9901
2,40,99220,9925
2,50,99410,9943
2,60,99560,9957
2,70,99670,9968
2,80,99760,9977
2,90,99820,9983
3,00,99870,9988
3,10,99910,9991
3,20,99940,9994
3,30,99950,9996
3,40,99970,9997
3,50,99980,9998
kk45
−3,50,00020,0002
−3,40,00030,0003
−3,30,00040,0004
−3,20,00060,0006
−3,10,00080,0008
−3,00,00120,0011
−2,90,00160,0016
−2,80,00230,0022
−2,70,00310,0030
−2,60,00410,0040
−2,50,00550,0054
−2,40,00730,0071
−2,30,00960,0094
−2,20,01250,0122
−2,10,01620,0158
−2,00,02070,0202
−1,90,02620,0256
−1,80,03290,0322
−1,70,04090,0401
−1,60,05050,0495
−1,50,06180,0606
−1,40,07490,0735
−1,30,09010,0885
−1,20,10750,1056
−1,10,12710,1251
−1,00,14920,1469
−0,90,17360,1711
−0,80,20050,1977
−0,70,22960,2266
−0,60,26110,2578
−0,50,29460,2912
−0,40,33000,3264
−0,30,36690,3632
−0,20,40520,4013
−0,10,44430,4404
−0,00,48400,4801
kk45
0,00,51600,5199
0,10,55570,5596
0,20,59480,5987
0,30,63310,6368
0,40,67000,6736
0,50,70540,7088
0,60,73890,7422
0,70,77040,7734
0,80,79950,8023
0,90,82640,8289
1,00,85080,8531
1,10,87290,8749
1,20,89250,8944
1,30,90990,9115
1,40,92510,9265
1,50,93820,9394
1,60,94950,9505
1,70,95910,9599
1,80,96710,9678
1,90,97380,9744
2,00,97930,9798
2,10,98380,9842
2,20,98750,9878
2,30,99040,9906
2,40,99270,9929
2,50,99450,9946
2,60,99590,9960
2,70,99690,9970
2,80,99770,9978
2,90,99840,9984
3,00,99880,9989
3,10,99920,9992
3,20,99940,9994
3,30,99960,9996
3,40,99970,9997
3,50,99980,9998
kk67
−3,50,00020,0002
−3,40,00030,0003
−3,30,00040,0004
−3,20,00060,0005
−3,10,00080,0008
−3,00,00110,0011
−2,90,00150,0015
−2,80,00210,0021
−2,70,00290,0028
−2,60,00390,0038
−2,50,00520,0051
−2,40,00690,0068
−2,30,00910,0089
−2,20,01190,0116
−2,10,01540,0150
−2,00,01970,0192
−1,90,02500,0244
−1,80,03140,0307
−1,70,03920,0384
−1,60,04850,0475
−1,50,05940,0582
−1,40,07210,0708
−1,30,08690,0853
−1,20,10380,1020
−1,10,12300,1210
−1,00,14460,1423
−0,90,16850,1660
−0,80,19490,1922
−0,70,22360,2206
−0,60,25460,2514
−0,50,28770,2843
−0,40,32280,3192
−0,30,35940,3557
−0,20,39740,3936
−0,10,43640,4325
−0,00,47610,4721
kk67
0,00,52390,5279
0,10,56360,5675
0,20,60260,6064
0,30,64060,6443
0,40,67720,6808
0,50,71230,7157
0,60,74540,7486
0,70,77640,7794
0,80,80510,8078
0,90,83150,8340
1,00,85540,8577
1,10,87700,8790
1,20,89620,8980
1,30,91310,9147
1,40,92790,9292
1,50,94060,9418
1,60,95150,9525
1,70,96080,9616
1,80,96860,9693
1,90,97500,9756
2,00,98030,9808
2,10,98460,9850
2,20,98810,9884
2,30,99090,9911
2,40,99310,9932
2,50,99480,9949
2,60,99610,9962
2,70,99710,9972
2,80,99790,9979
2,90,99850,9985
3,00,99890,9989
3,10,99920,9992
3,20,99940,9995
3,30,99960,9996
3,40,99970,9997
3,50,99980,9998
kk89
−3,50,00020,0002
−3,40,00030,0002
−3,30,00040,0003
−3,20,00050,0005
−3,10,00070,0007
−3,00,00100,0010
−2,90,00140,0014
−2,80,00200,0019
−2,70,00270,0026
−2,60,00370,0036
−2,50,00490,0048
−2,40,00660,0064
−2,30,00870,0084
−2,20,01130,0110
−2,10,01460,0143
−2,00,01880,0183
−1,90,02390,0233
−1,80,03010,0294
−1,70,03750,0367
−1,60,04650,0455
−1,50,05710,0559
−1,40,06940,0681
−1,30,08380,0823
−1,20,10030,0985
−1,10,11900,1170
−1,00,14010,1379
−0,90,16350,1611
−0,80,18940,1867
−0,70,21770,2148
−0,60,24830,2451
−0,50,28100,2776
−0,40,31560,3121
−0,30,35200,3483
−0,20,38970,3859
−0,10,42860,4247
−0,00,46810,4641
kk89
0,00,53190,5359
0,10,57140,5753
0,20,61030,6141
0,30,64800,6517
0,40,68440,6879
0,50,71900,7224
0,60,75170,7549
0,70,78230,7852
0,80,81060,8133
0,90,83650,8389
1,00,85990,8621
1,10,88100,8830
1,20,89970,9015
1,30,91620,9177
1,40,93060,9319
1,50,94290,9441
1,60,95350,9545
1,70,96250,9633
1,80,96990,9706
1,90,97610,9767
2,00,98120,9817
2,10,98540,9857
2,20,98870,9890
2,30,99130,9916
2,40,99340,9936
2,50,99510,9952
2,60,99630,9964
2,70,99730,9974
2,80,99800,9981
2,90,99860,9986
3,00,99900,9990
3,10,99930,9993
3,20,99950,9995
3,30,99960,9997
3,40,99970,9998
3,50,99980,9998