
opal
Authored by Manuel Conde Carrera manuconde.mcc@gmail.com
Arts
University
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22 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sea X una v.a. Pois(4.5). Calcula P(X=0). (3 decimales)
2.
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1 min • 1 pt
La probabilidad de recibir erróneamente un bit a través de un canal de transmisión digital es 0.015. Asumimos que todas las transmisionesson independientes. Calcula la mediana del número de bits recibidos correctamente antes del primero incorrecto.
3.
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1 min • 1 pt
Sea X una v.a. B(12, 0.8). Calcula P(X=0).
Formato= X.XXXE-XX
4.
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1 min • 1 pt
Sea X una v.a. N(0.1, 1.2). Calcula P(-1<X<1) (3 decimales)
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Un examen consta de 10 preguntas. Un alumno tiene una probabilidad de 0.82 de contestar bien cada pregunta. Calcula la mediana del número de preguntas bien contestadas.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Sea X una v.a. U(-6,8). El código correcto para calcular el cuantil 0.95 es:
qunif(0.05, -6, 8)
1-qunif(0.05, -6, 8)
qunif(0.05, -6, 8, lower.tail=F)
qunif(0.95, -6, 8, lower.tail=F)
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Sea X una v.a. U(5,8). Calcula P(6.2<X<7.5). (4 decimales)
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