Stats help... probability. Chart attached in comments

Question

anonymous · Answer

attachment

amistre64 · Answer

how is probability defined?

anonymous · Answer

What do you mean?

amistre64 · Answer

i mean, in order to understand how to get an answer; you first must know how a probability is defined.  Since the answers are just the result of the definition

anonymous · Answer

Well, it's just the possibility that a certain event can occur. i just don't know how to do this one because there are 3 children and I am confused. At first I counted all the girls and divided it by 24 and got 1/3 but it said it was wrong cause I wasn't counting it right with just ONE girl total.

amistre64 · Answer

well, you got a rudimentary idea; lets refine it

probability is defined as:

(what we are looking for) divided by (all the possible outcomes)

amistre64 · Answer

how many possible outcomes does the table give us?  in other words, how many rows are in the table?

anonymous · Answer

3

anonymous · Answer

I mean, 8

amistre64 · Answer

lol, ill go with 8 :)

so, count how many outcomes we want that show up, and divide that by 8

for example:  how many rows have exactly 1 girl?

anonymous · Answer

ohhh okay, so if 3 rows have 1 girl, then i would do 3/8?

amistre64 · Answer

yes

how many rows have exactly 0 girls?

anonymous · Answer

1/8 and then the 3rd one is 3/8. Thank you soooo much!!

amistre64 · Answer

yep, good luck ;)