Knowee
Questions
Features
Study Tools

Let E and F are events of a experiment such that P(E) = 3/10 P(F) = ½ and P(F|E) = ⅖. Find the value of (i) P(E ∩ F) (ii) P(E|F) (iii) P(E U F)

Question

Let E and F are events of a experiment such that P(E) = 3/10 P(F) = ½ and P(F|E) = ⅖. Find the value of (i) P(E ∩ F) (ii) P(E|F) (iii) P(E U F)

🧐 Not the exact question you are looking for?Go ask a question

Solution

Claro, vamos a resolver el problema paso a paso.

Dado:

  • P(E)=310 P(E) = \frac{3}{10}
  • P(F)=12 P(F) = \frac{1}{2}
  • P(FE)=25 P(F|E) = \frac{2}{5}

(i) Para encontrar P(EF) P(E \cap F) :

Sabemos que P(FE)=P(EF)P(E) P(F|E) = \frac{P(E \cap F)}{P(E)} .

Entonces, 25=P(EF)310 \frac{2}{5} = \frac{P(E \cap F)}{\frac{3}{10}}

Multiplicamos ambos lados por 310 \frac{3}{10} : P(EF)=25×310=650=325 P(E \cap F) = \frac{2}{5} \times \frac{3}{10} = \frac{6}{50} = \frac{3}{25}

(ii) Para encontrar P(EF) P(E|F) :

Sabemos que P(EF)=P(EF)P(F) P(E|F) = \frac{P(E \cap F)}{P(F)} .

Entonces, P(EF)=32512=325×2=625 P(E|F) = \frac{\frac{3}{25}}{\frac{1}{2}} = \frac{3}{25} \times 2 = \frac{6}{25}

(iii) Para encontrar P(EF) P(E \cup F) :

Sabemos que P(EF)=P(E)+P(F)P(EF) P(E \cup F) = P(E) + P(F) - P(E \cap F) .

Entonces, P(EF)=310+12325 P(E \cup F) = \frac{3}{10} + \frac{1}{2} - \frac{3}{25}

Primero, encontramos un denominador común para sumar las fracciones: 310=1550 \frac{3}{10} = \frac{15}{50} 12=2550 \frac{1}{2} = \frac{25}{50} 325=650 \frac{3}{25} = \frac{6}{50}

Entonces, P(EF)=1550+2550650=3450=1725 P(E \cup F) = \frac{15}{50} + \frac{25}{50} - \frac{6}{50} = \frac{34}{50} = \frac{17}{25}

Resumiendo: (i) P(EF)=325 P(E \cap F) = \frac{3}{25} (ii) P(EF)=625 P(E|F) = \frac{6}{25} (iii) P(EF)=1725 P(E \cup F) = \frac{17}{25}

This problem has been solved

Similar Questions

Given that E and F are events such that P(E) = 0.6, P(F) = 0.3 and P(E∩F) = 0.2 then P(E|F) ?Options 14 13 23

E and F are mutually exclusive events. P(E) = 0.2; P(F) = 0.3. Find P(E|F). (Enter your answer to one decimal place.)P(E|F) =

Let E and F be events of a sample space S of an experiment, if P(S|F) = P(F|F) then value of P(S|F) is __________Review Later0-11Infinity

E and F are mutually exclusive events. P(E) = 0.4; P(F) = 0.5. P(E∣F) = ___________.Question 3Answera.0b.0.25c.2

If E and F are two events associated with the same sample space of a random experiment then P(E|F) is given by __________

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.