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. $\frac{1}{4}$, or 0.25
b. $\frac{1}{50}$, or 0.02
c. $\frac{3}{4}$, or 0.75
d. $\frac{1}{2}$, or 0.5

Explanation:

Step1: Interpret 50-50 chance

A 50-50 chance means an event has an equal likelihood of occurring or not, so it represents half of the total probability (which is 1).

Step2: Convert to probability value

A 50-50 chance corresponds to a probability of $\frac{1}{2}$, which is equal to 0.5.

Answer:

D. $\frac{1}{2}$, or 0.5