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ashontae19

  • one year ago

can anyone help me i will give a medal!!

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  1. anonymous
    • one year ago
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    sure what is your question

  2. ashontae19
    • one year ago
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    Anyone can they please try??????

  3. kropot72
    • one year ago
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    Just to confirm your understanding, can you complete the definition of independence: \[\large P(A \cap B)=?\]

  4. ashontae19
    • one year ago
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    yes

  5. kropot72
    • one year ago
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    What is the right hand side of the definition? Please post it here.

  6. ashontae19
    • one year ago
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    =0.75

  7. ashontae19
    • one year ago
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    for the first one correct?

  8. kropot72
    • one year ago
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    I think you should post the definition of independence of events A and B before we continue.

  9. kropot72
    • one year ago
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    The definition of independence is as follows: Events A and B are independent if and only if\[\large P(A\cap B)=P(A) \times P(B)\] Using this definition, are the events in 1a independent?

  10. kropot72
    • one year ago
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    It appears from your answers that either you are guessing or you do not understand the definition of independence (or both).

  11. ashontae19
    • one year ago
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    Im not guessing thats the answers i got

  12. kropot72
    • one year ago
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    Well how did you get the answer 'dependent' for 1a ?

  13. ashontae19
    • one year ago
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    .45(30)=.135 that cancels out .75 so its not independent

  14. kropot72
    • one year ago
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    The correct explanation for 1a is as follows: P(A) = 0.45 P(B) = 0.3 If events A and B were independent \[\large P(A) \times P(B)=0.135\] However A intersection B = 0.75, therefore the events are dependent.

  15. ashontae19
    • one year ago
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    can you help me on two more

  16. kropot72
    • one year ago
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    Sorry, i have to log out now. I hope I have helped you.

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