In a sleep study there are 50 people who are 20 years old, 50 people who are 25 years old, and 50 people who are 30 years old. If an additional 20-year-old person participates in the study, what happens to the average age, the median age, and the age range of the participants in the study?
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The average age decreases, and the median age and the age range do not change.
The average age and the median age decrease, and the age range does not change.
The average age and the median age increase, and the age range decreases.
The average age does not change, and the median age and the age range decrease.