Use the Following to Answer Questions

question 57

Multiple Choice

Use the following to answer questions :
In a class of 20 students, there are 12 girls and 8 boys. Three students are randomly selected to be teacher's assistants.
-What is the probability that the group consists of exactly two boys? Round your answer to four decimal places.

• A) 0.2400
• B) 0.1474
• C) 0.2947
• D) 0.5895

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Definitions:

Doctor of Medicine

A professional degree awarded to individuals who have completed medical school, qualifying them to practice medicine.

Negative Reinforcement

A process in operant conditioning where a response is strengthened because it is followed by the removal of an unpleasant stimulus.

Operant Conditioning

A method of learning that employs rewards and punishments for behavior.

Desirable Stimulus

A stimulus that is appealing and rewarding to an individual, prompting positive reactions.