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Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected. What is the random variable

Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected. What is the random variable in this experiment?

a. the number of registered voters in the nation

b. the random sample of 5 voters

c. the number of female voters out of 5

d. the 40% of female registered voters

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