Question

a survey was done of commuters in three major cities about how they primarily got to work. given that they took the train, what was the probability that they lived in chicago?

options:
a 56%
b 14%
c 34%
d 27%

table:

	car	train	walk	total
los angeles	36	24	10	70
chicago	16	28	6	50
total	62	102	36	200

Explanation:

Step1: Identify relevant values

We need the number of commuters who took the train and lived in Chicago (28) and the total number of commuters who took the train (102).

Step2: Calculate the probability

The probability is the number of favorable outcomes (Chicago and train) divided by the number of total outcomes (train). So, $P = \frac{28}{102} \approx 0.2745$, which is approximately 27%.

Answer:

D. 27%