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TOEFL
/
Listening practice
/ Section LYZT
Listen to an Academic Talk
Listen to part of a talk in an epidemiology class.
Listen
46. Why does the speaker work through the example with a hundred thousand people?
A
To show that the test performs better in a large group
B
To estimate how many people should be screened
C
To make the relationship between the two numbers visible
D
To compare two different tests