BoyGirl Wear Glasses$21$$11$ Do not wear glasses$9$$18$ Let $W$ be event when student selected weari

Question

BoyGirl Wear Glasses$21$$11$ Do not wear glasses$9$$18$ Let $W$ be event when student selected wearing glasses. Let $B$ be event when student selected is a boy. Find $\mathrm{P}\left( \mathrm{W}|\mathrm{B} \right)$ $\mathrm{P}\left( \mathrm{B}'|\mathrm{W}' \right)$ $\mathrm{P}\left( \mathrm{B}|\mathrm{W} \right)$

Accepted Answer

(i) $\displaystyle\frac{7}{10}$; (ii) $\displaystyle\frac{2}{3}$; (iii) $\displaystyle\frac{21}{32}$

Worked Example 2

Worked Example 2

Video Solution:

Default solution

	Boy	Girl
Wear Glasses	\(21\)	\(11\)
Do not wear glasses	\(9\)	\(18\)