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19-09-2022
Mathematics

Answered

A biology class designed a study to see whether coffee drinkers or non-coffee
drinkers remember names better. 50 teachers were randomly selected. Some of the
teachers who were selected drink coffee and some do not. They were given the
same list of student names to study and asked to recall as many as possible.
Part A. Is this an observational study or an experiment? Explain.

Answer :

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