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draw a tree diagram |dw:1438709422886:dw|
P (2 cats) = 0.5*0.5
Going along the cat / cat branch we multutiply 0.5 by 0.5 to get P = 0.25 or 25%
P(2 dogs) = 0.25 also
P(cat and dog) follows 2 paths so its 0.25 + 0.25 = 0.5
i dont understand what is the answer
So what is the answer
Probability of 2 cats or 2 dogs = 0.25 + 0.25 = 0.50 or 50%
oh pellet i read it wromg this is actually so simple
going along the branches you multiply the probabilities If its a choice of one branch OR the other you ADD the probabilities
OMG im dying i wrote s h i t and when i npressed post it spell corrected to pellet
is that right!!?? lol
ya try it
no do it all together
can yyou helpme with another one
one thing worth remembering with probabilities is AND = * and OR = + cat AND cat = * , 2 dogs OR 2 cats = +
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.
it still has to do with the first question
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.
* toss the 2 coins
but it says 2 coins
yea - you will toss 2 coins together or one after the other that does noy matter
oh huh ok