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 between 0 and 1.

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

Explanation:

Step1: Interpret 50 - 50 chance

A 50 - 50 chance means 50 out of 100.

Step2: Convert to fraction and decimal

$\frac{50}{100}=\frac{1}{2}=0.5$

Answer:

a. $\frac{1}{2}$ or 0.5