Question

seat-belt usage across different road types
road type yes no total
highway 70 30 100
city 50 50 100
rural 60 40 100
total 180 120 300
based on the data, which road type has the highest conditional frequency of seat-belt usage?
rural
highway
city
all the same

Explanation:

Step1: Calculate conditional frequency for Highway

Conditional frequency = (Yes for Highway) / (Total for Highway) = $70 / 100 = 0.7$

Step2: Calculate conditional frequency for City

Conditional frequency = (Yes for City) / (Total for City) = $50 / 100 = 0.5$

Step3: Calculate conditional frequency for Rural

Conditional frequency = (Yes for Rural) / (Total for Rural) = $60 / 100 = 0.6$

Step4: Compare the frequencies

0.7 (Highway) > 0.6 (Rural) > 0.5 (City)

Answer:

highway