Answer
a) $11/26$ for P(foreign | 15,000 or less), $11/23$ for P(15,000 or less | foreign)
b) The probabilities are not the same since different factors are used in determining the sample space.
Work Step by Step
a)
26 cars are under 15,000
11 are foreign
$11/26$
23 cars are foreign
11 cars are under 15,000
$11/23$