Question

driving data scenario
you are provided with data collected from a traffic study that recorded whether drivers of various vehicle types adhered to speed limits. the data includes 200 observations categorized into vehicle types (car, suv, truck) and whether the driver was speeding (\yes\ or
o\).
raw data summary:

• car drivers: 50 adhered to speed limits, 30 did not.
• suv drivers: 40 adhered to speed limits, 40 did not.
• truck drivers: 20 adhered to speed limits, 20 did not.

using the raw data, the table shown was constructed.

vehicle type	adhered to speed limit (yes)	did not adhere to speed limit (no)	total
suv		40	80
truck	20		40
total			200

given that 50 car drivers adhered to speed limits, and the total number of car drivers surveyed is 80, how many car drivers did not adhere to speed limits?
options: 30, 20, 40, 50

Explanation:

Step1: Identify the formula

To find the number of car drivers who did not adhere to speed limits, we use the formula: Total car drivers - Car drivers who adhered = Car drivers who did not adhere.

Step2: Plug in the values

Total car drivers = 80, Car drivers who adhered = 50. So, \( 80 - 50 = 30 \).

Answer:

30