Please Help HW.

#1
A study undertaken by the Miami-Dade Supervisor of Elections in 2002 revealed that 44% of registered voters are Democrats, 37% are Republicans, and 19% are others. If two registered voters are selected at random, what is the probability that both of them have the same party affiliation (to 4 decimals)?

I'm not sure where to begin.
Dem .44
Rep .37
Others .19

Please explain so I can work on other similar problems.
 

Dason

Ambassador to the humans
#2
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#3
Think about the following questions in the order in which they appear:

1. What is the probability of selecting one voter at random who is a Dem?
2. Having selected one Dem, what is the probability that the next randomly selected voter is also a Dem?
3. Therefore, what is the composite probability that two randomly selected voters are both Dems?
4. Consider Q1 to Q3 for Reps and for Other.
5. Which selection [path produces / paths produce] the outcome that the problem asks about?
6. What is the overall probability of selecting along [that path / any one of those paths]?
 
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