Answer
a) $\frac{39}{100}$
b) $\frac{20}{100}$
c) $\frac{7}{20}$
d) $\frac{7}{39}$
Work Step by Step
Probability = Total number of favourable outcomes/Total number of possible outcomes
a) $P(A)=\frac{7+32}{7+32+13+48}=\frac{39}{100}=0.39$
b) $P(B)=\frac{13+7}{13+7+48+32}=20/100=0.2$
c) $P(A|B)=\frac{P(A\cap B)}{P(B)}=\frac{\frac{7}{100}}{\frac{20}{100}}=7/20=0.35$
d) $P(B|A)=\frac{P(B\cap A)}{P(A)}=\frac{\frac{7}{100}}{\frac{39}{100}}=7/39$
