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Scientists conduct a study in which 100 adults with chronic diarrhea are divided into 2 groups with 50 people per group.One group is given a supply of yogurt that contains a certain kind of bacteria,and the other group is given yogurt that is bacteria-free.The study's participants and researchers do not know which group of subjects has the bacteria in the yogurt and which group does not.The scientists instruct the participants to eat the entire 8 ounces of yogurt once a day for a month and record their bowel habits.This is an example of a(n) ________ study.
World Population
The total number of living humans on Earth at a given time.
Per Capita Energy
The average amount of energy consumed per person within a specific population or area.
Degree Celsius
A unit of measurement for temperature where 0 degrees represents the freezing point of water, and 100 degrees represents the boiling point at sea level.
Average Person
A hypothetical individual who represents the common or typical characteristics of a group, often used in statistical and economic models.
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