An Urn Contains 7 Red, 3 White, and 6 Black

question 170

Multiple Choice

An urn contains 7 red, 3 white, and 6 black balls. One ball is drawn from the urn, it is replaced, and a second ball is drawn. Construct a probability tree to determine the probability that one ball is white W and one is red R. ​

• A)Pr(one W ∩ one
• R) =
• B)Pr(one W ∩ one
• R) =
• C)Pr(one W ∩ one
• R) =
• D)Pr(one W ∩ one
• R) =
• E)Pr(one W ∩ one
• R) =

---

Definitions:

Health History Form

A document used in medical settings that records a patient's medical history, including past illnesses, surgeries, and family medical history, to aid in diagnosis and treatment.

Medications

Substances used to diagnose, treat, or prevent illness and disease in humans or animals.

Allergies

Immune system reactions to a foreign substance that is not typically harmful to the body, such as pollen, food, or pet dander.

SOAP Charting

A method of documentation employed by healthcare providers to write out notes in a patient's chart, consisting of four sections: Subjective, Objective, Assessment, and Plan.