In a Certain Class of Students, There Are 11 Boys

question 34

Multiple Choice

In a certain class of students, there are 11 boys from Wilmette, 7 girls from Wilmette, 5 boys from Winnetka, 4 girls from Winnetka, 4 boys from Glencoe, and 4 girls from Glencoe. If the
Teacher calls upon a student to answer a question, what is the probability that the student will
Be a boy?

• A)0.71
• B)0.429
• C)0.571
• D)0.314

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Definitions:

Dizygotic

Referring to twins who develop from two different eggs fertilized by two different sperm, also known as fraternal twins.

Gender Selection

The practice of influencing the probability of having a child of a particular sex using various medical or natural methods.

Sex-Linked Diseases

Genetic disorders caused by abnormalities in genes on the sex chromosomes, often affecting one sex more frequently than the other.

Surrogacy

A method of assisted reproduction where a woman (the surrogate) agrees to carry and deliver a baby for another person or couple, who will become the child's parent(s) after birth.