Exhibit 5-9
Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected.
-Refer to Exhibit 5-9. What is the random variable in this experiment?
A)the 40% of female registered voters
B)the random sample of 5 voters
C)the number of female voters out of 5
D)the number of registered voters in the nation

Question

Quizplus · Accepted Answer

The random variable in this experiment is the number of female voters out of 5 selected. This is because we are interested in counting the number of female voters in the sample of 5 that we have selected. A and D are incorrect because they are not random variables in this specific experiment. B is not the random variable because it is the process of selecting the voters, not the outcome we are interested in.

Exhibit 5-9 Forty Percent of All Registered Voters in a National Election