i am pulling my hair out over this chapter on probability.
First question which formula do I use to determine this answer.

A gumball machine contains 300 grape flavored balls, 400 cherry flavored balls, and 500 lemon flavored balls. What is the probability of getting 1 grape ball, 1 cherry ball, and 1 lemon ball if each ball was removed and then replaced before choosing the next from the machine?
a) 0.0264
b) 0.0531
c) 0.0347
d) 0.0482
i got answer c
but i have no clue how the heck i got to that answer.
p.s i just started learning statisitcs, any info or tools of the trade will be greatly appreciated
please help
utterly confused
hilary

Last edited by hilarysears77; 10-07-2005 at 02:04 PM.