Answer
a) $0.1$
b) $0.2$
c) $0.8$
Work Step by Step
There are 20 equal sections in which there are $2$ of $1$, $2$ of $2$, $8$ of $3$ and $8$ of $4$.
a) Probability the customer wins $\$10$
This happens if the wheel lands on 1.
$P(1)=\frac{2}{10}=\frac{1}{10}=0.1.$
b) Probability the customer wins money
Winning money = either $\$10$ (1) or $\$5$ (2).
$P(1)+P(2)=\frac{2}{20}+\frac{2}{20}=\frac{1}{5}=0.2.$
c) Probability the customer wins a coupon
Winning coupon = the wheel lands on 3 or 4.
$P(3)+P(4)=\frac{8}{20}+\frac{8}{20}=\frac{16}{20}=0.8.$
