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

if 40 suv drivers did not adhere to speed limits and the total number of suv drivers surveyed is 80, how many suv drivers adhered to speed limits?
options: 50, 20, 60, 40

Explanation:

Step1: Identify total and non - adherent SUV drivers

We know that the total number of SUV drivers surveyed is 80, and the number of SUV drivers who did not adhere to speed limits is 40.

Step2: Calculate adherent SUV drivers

To find the number of SUV drivers who adhered to speed limits, we use the formula: Number of adherent drivers = Total number of SUV drivers - Number of non - adherent SUV drivers.
Mathematically, this is $80 - 40=40$.

Answer:

40