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February 23rd, 2012, 08:18 PM  #1 
Newbie Joined: Feb 2012 Posts: 10 Thanks: 0  2 part probability problem
Part 1: It is found that when a particular 4sided die is rolled a 1 occurs 20.5% of the time, a 2 occurs 24.3% of the time, a 3 occurs 28.8% of the time, and a 4 occurs 26.4% of the time. a) If the die is rolled eight times, what is the probability that an odd number occurs exactly four times? b) What is the expected value of a single roll of the die? Part 2: For the die in problem #9, let the random variable X be defined as X = (the number of times that 2 occurs). If the die is rolled a total of four times: a) Construct a table for the probability distribution of X. b) Construct a histogram for the probability distribution of X. c) Find E(X). 
February 24th, 2012, 12:34 AM  #2 
Senior Member Joined: Oct 2011 From: Belgium Posts: 522 Thanks: 0  Re: 2 part probability problem
1 a) 

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