Odpowiedź:
P( A ∪ B ) = P( A) + P ( B) - P ( A ∩ B) = [tex]\frac{3}{4}[/tex] + [tex]\frac{2}{4}[/tex] - [tex]\frac{1}{8}[/tex] = [tex]\frac{5}{4}[/tex] - [tex]\frac{1}{8}[/tex] = [tex]\frac{10}{8} - \frac{1}{8} = \frac{9}{8}[/tex] > 1
Błędne dane.
P ( A I B ) = [tex]\frac{P ( A n B)}{P( B )} = \frac{\frac{1}{8} }{\frac{1}{2} }[/tex] = [tex]\frac{1}{8} * 2 = \frac{2}{8} = \frac{1}{4}[/tex]
Szczegółowe wyjaśnienie:
