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yashar806

  • one year ago

We have a small deck of ten cards. Five of the cards are red, three are blue and two are green. We randomly select four cards from the deck with replacement. That is, after we select a card and record the colour, we put the card back in the deck and thoroughly shuffle them before we select another card.

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  1. yashar806
    • one year ago
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    make a tree diagram

  2. yashar806
    • one year ago
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    how should i make a tree diagram for this probability?

  3. nincompoop
    • one year ago
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    http://bit.ly/141H2wI

  4. yashar806
    • one year ago
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    help please

  5. yashar806
    • one year ago
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    What is the probability that the rst two selected cards are the same colour?

  6. yashar806
    • one year ago
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    first

  7. yashar806
    • one year ago
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    are ut here?

  8. yashar806
    • one year ago
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    hello?

  9. kropot72
    • one year ago
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    Did the full question ask you to make a tree diagram?

  10. yashar806
    • one year ago
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    no

  11. yashar806
    • one year ago
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    What is the probability that the rst two selected cards are the same colour?

  12. yashar806
    • one year ago
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    thats the question

  13. yashar806
    • one year ago
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    What is the probability that the first two selected cards are the same colour?

  14. kropot72
    • one year ago
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    There are three possible events to consider: 1. P(red + red) = 5/10 * 5/10 2. P(blue + blue) = 3/10 * 3/10 3. P(green + green) = 2/10 * 2/10 These three events are mutually exclusive, therefore the probability of the first two selected cards being the same color is the sum of the above three probabilities.

  15. kropot72
    • one year ago
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    @yashar806 Have you done the calculation yet?

  16. kropot72
    • one year ago
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    Required probability is \[0.5^{2}+0.3^{2}+0.2^{2}=you\ ca\ calculate\]

  17. kropot72
    • one year ago
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    you can*

  18. yashar806
    • one year ago
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    yep

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