SOLUTION: I asked this question already, but i never got an email back that it was submitted, so here is the question again. i have not stopped trying to figure it out, but im still confuse.

Algebra ->  Probability-and-statistics -> SOLUTION: I asked this question already, but i never got an email back that it was submitted, so here is the question again. i have not stopped trying to figure it out, but im still confuse.      Log On


   



Question 859814: I asked this question already, but i never got an email back that it was submitted, so here is the question again. i have not stopped trying to figure it out, but im still confuse.
In a large shipment of boxes of cat food, 30% of the boxes are lightweight (below the marked label weight). Suppose that a random sample of boxes are drawn and weighed until 1 lightweight box is found. What is the probability that the sample size will be exactly 4?

Found 2 solutions by richwmiller, ewatrrr:
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
Your previous question was received and posted less than an hour ago.
Probability-and-statistics/859796 (2014-04-03 10:15:27): Here is a question about probability I have had been having a hard time with.

In a large shipment of boxes of cat food, 30% of the boxes are lightweight (below the marked label weight). Suppose that a random sample of boxes are drawn and weighed until 1 lightweight box is found. What is the probability that the sample size will be exactly 4?

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,
my thoughts
P(on fourth draw) = %28.70%2A.70%2A.70%2A.30%29