anonymous
  • anonymous
Please help... Thanks! Suppose that a family has an equally likely chance of having a cat or a dog. If they have two pets, they could have 1 dog and 1 cat, they could have 2 dogs, or they could have 2 cats. 1. What is the theoretical probability that the family has two dogs or two cats?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
@kitty_lover1234
anonymous
  • anonymous
@DanJS
welshfella
  • welshfella
draw a tree diagram |dw:1438709422886:dw|

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More answers

anonymous
  • anonymous
what??
welshfella
  • welshfella
P (2 cats) = 0.5*0.5
anonymous
  • anonymous
0.25
welshfella
  • welshfella
|dw:1438709623610:dw|
welshfella
  • welshfella
Going along the cat / cat branch we multutiply 0.5 by 0.5 to get P = 0.25 or 25%
anonymous
  • anonymous
sooooo....
welshfella
  • welshfella
P(2 dogs) = 0.25 also
anonymous
  • anonymous
yes
welshfella
  • welshfella
P(cat and dog) follows 2 paths so its 0.25 + 0.25 = 0.5
anonymous
  • anonymous
i dont understand what is the answer
welshfella
  • welshfella
|dw:1438709856132:dw|
anonymous
  • anonymous
So what is the answer
welshfella
  • welshfella
Probability of 2 cats or 2 dogs = 0.25 + 0.25 = 0.50 or 50%
anonymous
  • anonymous
oh pellet i read it wromg this is actually so simple
welshfella
  • welshfella
going along the branches you multiply the probabilities If its a choice of one branch OR the other you ADD the probabilities
anonymous
  • anonymous
OMG im dying i wrote s h i t and when i npressed post it spell corrected to pellet
welshfella
  • welshfella
is that right!!?? lol
anonymous
  • anonymous
ya try it
welshfella
  • welshfella
pellet
anonymous
  • anonymous
no do it all together
anonymous
  • anonymous
HAHAH see
welshfella
  • welshfella
lol yea
anonymous
  • anonymous
well thanks
welshfella
  • welshfella
yw
anonymous
  • anonymous
can yyou helpme with another one
anonymous
  • anonymous
????
welshfella
  • welshfella
one thing worth remembering with probabilities is AND = * and OR = + cat AND cat = * , 2 dogs OR 2 cats = +
welshfella
  • welshfella
ok
anonymous
  • anonymous
ok
anonymous
  • anonymous
2. Describe how to use two coins to simulate which two pets the family has. 3. Flip both coins 50 times and record your data in a table like the one below.
anonymous
  • anonymous
it still has to do with the first question
welshfella
  • welshfella
let cats = heads and dog = tails - toss the coin. This is similar to to the question because there is an equally likely chance to get a head as a tail.
welshfella
  • welshfella
* toss the 2 coins
anonymous
  • anonymous
but it says 2 coins
welshfella
  • welshfella
yea - you will toss 2 coins together or one after the other that does noy matter
anonymous
  • anonymous
oh huh ok
anonymous
  • anonymous
thx
welshfella
  • welshfella
yw

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