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anonymous

  • one year ago

Max tossed a fair coin 3 times. What is the probability of getting heads in the first two trials and tails in the last trial?

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  1. carolinar7
    • one year ago
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    1/8

  2. carolinar7
    • one year ago
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    No its not that

  3. Astrophysics
    • one year ago
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    \[\text{probability} = \frac{ \text{number of favourable outcomes} }{ \text{number of possible outcomes} }\] and you should note it can never be greater than 1.

  4. Astrophysics
    • one year ago
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    So if we flipped one coin for example, we would have \[\frac{ fav }{ pos } = \frac{ 1 }{ 2 } = 0.5 = 50 \%\]

  5. Astrophysics
    • one year ago
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    thats the probability of getting heads if you flip one coin

  6. Astrophysics
    • one year ago
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    So if you had two then we would have \[\frac{ fav }{ pos } = \frac{ 2 }{ 4 }\] see a patten here?

  7. anonymous
    • one year ago
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    so does that mean with three it would be 3/12

  8. anonymous
    • one year ago
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    oh wait maybe 3/8

  9. anonymous
    • one year ago
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    but if that is true the teacher marked it wrong

  10. IrishBoy123
    • one year ago
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    |dw:1437957649821:dw|

  11. IrishBoy123
    • one year ago
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    this is a binomial

  12. anonymous
    • one year ago
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    so what this tells me is that it is 2/8

  13. anonymous
    • one year ago
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    im i correct ?

  14. IrishBoy123
    • one year ago
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    go with @Astrophysics i just added this for colour

  15. anonymous
    • one year ago
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    but am i correct in my answer 2/8

  16. anonymous
    • one year ago
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    thank you i think i got it tough

  17. IrishBoy123
    • one year ago
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    mmmm....

  18. IrishBoy123
    • one year ago
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    good night

  19. Astrophysics
    • one year ago
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    2/8 does not seem right :O

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spraguer (Moderator)
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