Find the Indicated Probability

question 9

Multiple Choice

Find the indicated probability.
-A multiple choice test has 12 questions each of which has 5 possible answers, only one of which is correct. If Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer
Exactly 3 questions correctly?

• A) 0.283
• B) 0.236
• C) 0.00800
• D) 0.764

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Definitions:

Uptake Study

An Uptake Study is a medical test used to assess the functioning of specific organs by measuring the absorption of a radioactive substance.

Radioactive Substance

A material that emits radiation, resulting from the decay of atomic nuclei, used in various medical, industrial, and research applications.

Organ

A part of the body constructed of many types of tissue to perform a function.

Therapeutic Radiation

Used in the treatment of cancer by preventing cellular reproduction.