Mathematics, 19.02.2021 03:50 sindy35111
An article describes a study in which a new type of ointment was applied to forearms of volunteers to study the rates of absorption into the skin. Eight locations on the forearm were designated for ointment application. The new ointment was applied to four locations, and a control was applied to the other four. How many different choices were there for the four locations to apply the new ointment
Answers: 2
is the number of different combinations of x objects from a set of n elements, given by the following formula.
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An article describes a study in which a new type of ointment was applied to forearms of volunteers t...
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