Based on a recent poll, there is a 50-50 chance that a randomly selected adult has pierced ears. Express the indicated degree of likelihood as a probability value between 0 and 1.
A) $1 / 50$ or $0.02$
B) $1 / 4$ or $0.25$
C) $3 / 4$ or $0.75$
D) $1 / 2$ or $0.5$

Question

Based on a recent poll, there is a 50-50 chance that a randomly selected adult has pierced ears. Express the indicated degree of likelihood as a probability value between 0 and 1. 
A) $1 / 50$ or $0.02$
B) $1 / 4$ or $0.25$
C) $3 / 4$ or $0.75$
D) $1 / 2$ or $0.5$

Quizplus · Accepted Answer

A 50-50 chance means that there is an equal likelihood of the event happening or not happening, which can be expressed as a probability value of 0.5 or 1/2. Therefore, the best choice is D.

Based on a Recent Poll, There Is a 50-50 Chance 1/501 / 501/50

Based on a Recent Poll, There Is a 50-50 Chance $1 / 50$