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	80 - 40 = 40	40	80
truck	20	40 - 20 = 20	40
total	?	?	200

calculate the total number of drivers who adhered to speed limits across all vehicle types.
options: 110, 130, 90, 150

Explanation:

Step1: Identify adhered counts

Car: 50, SUV: 40, Truck: 20.

Step2: Sum the counts

$50 + 40 + 20 = 110$.

Answer:

110