Suppose the Probability of X Occurring Is 1 in 4

question 3

Multiple Choice

Suppose the probability of X occurring is 1 in 4, and the probability of Y occurring is 1 in 5. What is the probability of both occurring?

• A) (1/4) + (1/5) = (5/20) + (4/20) = 9/20
• B) (1/4)² + (1/5)² = (1/16) + (1/25) = (25/400) + (16/400) = 41/400
• C) (1/4) × (1/5) = 1/20
• D) (1/4)² × (1/5)² = (1/16) × (1/25) = 1/400

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Definitions:

Test

An examination or procedure done to detect or measure something, often used to diagnose diseases or conditions.

Placenta

An organ located between the mother and the fetus. It permits the absorption of nutrients and oxygen. In some cases, harmful substances such as viruses are absorbed through the placenta.

Vaginal Bleeding

Abnormal bleeding from the vagina, which can be due to various causes such as injury, infection, or underlying health conditions.

Urination

The process of expelling urine from the bladder through the urethra to the outside of the body; a vital function for the elimination of waste substances.