anonymous
  • anonymous
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?
Mathematics
jamiebookeater
  • jamiebookeater
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carolinar7
  • carolinar7
1/8
carolinar7
  • carolinar7
No its not that
Astrophysics
  • Astrophysics
\[\text{probability} = \frac{ \text{number of favourable outcomes} }{ \text{number of possible outcomes} }\] and you should note it can never be greater than 1.

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Astrophysics
  • Astrophysics
So if we flipped one coin for example, we would have \[\frac{ fav }{ pos } = \frac{ 1 }{ 2 } = 0.5 = 50 \%\]
Astrophysics
  • Astrophysics
thats the probability of getting heads if you flip one coin
Astrophysics
  • Astrophysics
So if you had two then we would have \[\frac{ fav }{ pos } = \frac{ 2 }{ 4 }\] see a patten here?
anonymous
  • anonymous
so does that mean with three it would be 3/12
anonymous
  • anonymous
oh wait maybe 3/8
anonymous
  • anonymous
but if that is true the teacher marked it wrong
IrishBoy123
  • IrishBoy123
|dw:1437957649821:dw|
IrishBoy123
  • IrishBoy123
this is a binomial
anonymous
  • anonymous
so what this tells me is that it is 2/8
anonymous
  • anonymous
im i correct ?
IrishBoy123
  • IrishBoy123
go with @Astrophysics i just added this for colour
anonymous
  • anonymous
but am i correct in my answer 2/8
anonymous
  • anonymous
thank you i think i got it tough
IrishBoy123
  • IrishBoy123
mmmm....
IrishBoy123
  • IrishBoy123
good night
Astrophysics
  • Astrophysics
2/8 does not seem right :O

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