Answer
a. $\frac{19}{50}$
b. $\frac{31}{50}$
c. $\frac{37}{50}$
Work Step by Step
a. 60 or 70 miles per hour
There are 19 states whose speed limit is 60 or 70 miles per hour, the probability here is $p=\frac{19}{50}$
b. Greater than 65 miles per hour
There are 31 states whose speed limit is greater than 65 miles per hour, so the probability is $p=\frac{31}{50}$
c. 70 miles per hour or less
There are 37 states whose speed limit is 70 miles per hour or less, the probability of choosing such a state is $p=\frac{37}{50}$