Thread: Homework Q5 View Single Post
#2
02-28-2015, 06:55 PM
 yaser Caltech Join Date: Aug 2009 Location: Pasadena, California, USA Posts: 1,478
Re: Homework Q5

Quote:
 Originally Posted by Andrew87 Hi, I'm working on the 6-th question but I can't get the solution. I solved Q5 and I found a probability to get on just one sample (N=10) of 0.0047. Then to compute the probability to get at least one sample with , I modeled the number of samples with 0 red marbles with a binomial random variable . Hence, the probability I need is and Finally , so my closest answer is [3] = 0.550, however the solution report [c] as right answer. Where did I make a mistake ? Thank you in advance for your time (and sorry for my english).
I did the math and the probability that one sample has no red marbles, which is evaluates to approximately 0.00034 rather than 0.0047.
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