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Nataliya [291]
3 years ago
5

An oil exploration company currently has two active projects, one in asia and the other in europe. let a be the event that the a

sian project is successful and b be the event that the european project is successful. suppose that a and b are independent events with p(a) 5 .4 and p(b) 5 .7.
a. if the asian project is not successful, what is the probability that the european project is also not successful? explain your reasoning.
b. what is the probability that at least one of the two projects will be successful?
c. given that at least one of the two projects is successful, what is the p
Mathematics
1 answer:
elena-s [515]3 years ago
6 0
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB                    
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Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 pregunt
n200080 [17]

La pregunta está incompleta:

Observa los puntajes de las respuestas de una evaluación que tuvo de 100 preguntas. Si Alfredo contestó correctamente 57 preguntas, 16 incorrectas y el resto las dejó en blanco, ¿qué puntuación obtuvo en la evaluación?

Puntos por respuesta:

Correctas: 4

En blanco: -1

Incorrectas: -3

Answer:

Alfredo obtuvo una puntuación de 153.

Step-by-step explanation:

De acuerdo a la información proporcionada, conoces el número de preguntas en la evaluación y el número de preguntas que Alfredo contestó de forma correcta e incorrecta y tienes que restar estas del total de preguntas para encontrar el número de preguntas que dejó en blanco:

100-57-16=27

Ahora, debes multiplicar el número de respuestas correctas, incorrectas y en blanco por su respectivo puntaje:

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Incorrectas: 16*(-3)=-48

Finalmente, debes sumar los resultados obtenidos por cada tipo de respuesta:

228+(-27)+(-48)= 228-27-48=153

De acuerdo a esto, la respuesta es que Alfredo obtuvo una puntuación de 153.

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