Question

In the book Chances: risk and odds in Everyday Life, author James Burke says that approximately 57% of the general US population wears glasses or contacts. If two people are chosen at random from the US population, what is the probability that both wear glasses or contacts?

Answer 1

Answer:

$Pr = 32.49\%$

Step-by-step explanation:

Given

Let E represents the event of wearing glasses or contacts.

So;

$P(E) =57\%$

Required

The probability that selected 2 wears glasses

This is calculated as:

$Pr = P(E)\ and\ P(E)$

$Pr = P(E)\ *\ P(E)$

$Pr = 57\% * 57\%$

$Pr = 0.57 * 0.57$

$Pr = 0.3249$

$Pr = 32.49\%$