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anonymous
 one year ago
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?
anonymous
 one year ago
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?

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welshfella
 one year ago
Best ResponseYou've already chosen the best response.0draw a tree diagram dw:1438709422886:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0P (2 cats) = 0.5*0.5

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438709623610:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Going along the cat / cat branch we multutiply 0.5 by 0.5 to get P = 0.25 or 25%

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0P(2 dogs) = 0.25 also

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0P(cat and dog) follows 2 paths so its 0.25 + 0.25 = 0.5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i dont understand what is the answer

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0dw:1438709856132:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So what is the answer

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Probability of 2 cats or 2 dogs = 0.25 + 0.25 = 0.50 or 50%

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh pellet i read it wromg this is actually so simple

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0going along the branches you multiply the probabilities If its a choice of one branch OR the other you ADD the probabilities

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0OMG im dying i wrote s h i t and when i npressed post it spell corrected to pellet

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0is that right!!?? lol

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0no do it all together

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0can yyou helpme with another one

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0one thing worth remembering with probabilities is AND = * and OR = + cat AND cat = * , 2 dogs OR 2 cats = +

anonymous
 one year ago
Best ResponseYou've already chosen the best response.02. 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
 one year ago
Best ResponseYou've already chosen the best response.0it still has to do with the first question

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0let 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
 one year ago
Best ResponseYou've already chosen the best response.0yea  you will toss 2 coins together or one after the other that does noy matter
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