Question

the frequency distribution to the right shows the number of voters (in millions) according to age. consider the event below. can it be considered unusual?

a voter chosen at random is between 18 to 20 years old

choose the correct answer below.

a. no. the probability of the event is not close to 0.
b. yes. the probability of the event is close to 0.
c. yes. the probability of the event is close to 1.
d. no. the probability of the event is not close to 1.

Explanation:

Sum the frequencies to find the total number of voters

Using the Frequency Distribution knowledge point

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Calculate the empirical probability of the event

Using the Empirical Probability knowledge point

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$$

Determine if the event is unusual

Using the Unusual Event Probability knowledge point

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$$

Answer:

• (A) No. The probability of the event is not close to 0.
• (B) Yes. The probability of the event is close to 0. (Correct answer)
• (C) Yes. The probability of the event is close to 1.
• (D) No. The probability of the event is not close to 1.