Question

A medical clinic is randomly selecting two staff members to attend a conference. The clinic employees include 7 nurses, 3 doctors, and 2 office staff. The nurses want to know the probability that both attendees will be nurses. The tree diagram displays the possible outcomes of randomly selecting two staff members. Which staff member is represented by label 1 in the tree diagram? Doctor Not nurse Not doctor Office staff

Answer 1

The staff represented by Label 1 in the tree diagram is 'Not Nurse"

The pair of branches of a tree diagram are used to represent A and A'. This means that if the upper branch points to A, then the corresponding branch below would point to the complement of A.

Here, the upper branch refers to "Nurses" . This means the branch below will refer to the complement of "Nurse" which is "Not Nurse" .

Hence, Label 1 refers to "Not Nurse".

Complete Question

A medical clinic is randomly selecting two staff members to attend a conference. The clinic employees include 7 nurses, 3 doctors, and 2 office staff. The nurses want to know the probability that both attendees will be nurses. The tree diagram displays the possible outcomes of randomly selecting two staff members. Which staff member is represented by label 1 in the tree diagram?

Doctor

Not nurse

Not doctor

Office staff