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19 October, 19:23

Choose an employee person at random. Let A be the event that the person is a female and B be the event that the person holds a managerial position. Data from the US department of labor suggests that P (A) = 0.47 and P (B|A) = 0.34

A) explain what P (A) = 0.47 means in context

B) explain what P (B|A) = 0.34 means in context

C) what is the probability that a randomly chosen employed person is a male?

D) what is the probability that a randomly chosen employed person is a female manager?

E) what is the probability that a randomly chosen employed female is not a manager?

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Answers (2)
  1. 19 October, 19:48
    0
    A: Female B: Managerial Position

    P (A) = 0.47

    P (B|A) = 0.34

    Find P (A') - > [Probability that the person is male]

    By the complement rule

    P (A') = 1 - P (A)

    = 1 - 0.47

    = 0.53

    P (A') = 0.53

    So the probability of a male being chosen is 0.53.

    2.) P (B|A) = P (B and A) / P (A)

    Use the values given P (A) and P (B|A) to find P (B and A) which will be your answer

    3.) What is the probability that a randomly chosen employed female is not a manager?

    What is the probability that a female is not a manager

    Find P (A and B')

    Step #1, First Find P (B' | A).

    It can be shown that

    P (B | A) + P (B' | A) = 1 [ You can verify this with a Venn diagram]

    So

    0.34 + P (B' | A) = 1

    so

    P (B' | A) = 0.66

    P (B' | A) = P (B' and A) / P (A)

    0.66 = P (B' and A) / 0.47

    So P (B' and A) = 0.3102

    So the chance you will be someone that is female and not a manager is 0.3102.
  2. 19 October, 20:08
    0
    Hello there.

    E) what is the probability that a randomly chosen employed female is not a manager?

    0.3102.
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