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February 23rd, 2012, 08:18 PM   #1
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2 part probability problem

Part 1:

It is found that when a particular 4-sided 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).
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February 24th, 2012, 12:34 AM   #2
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Re: 2 part probability problem

1 a)
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