Question

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.
calculate the total number of drivers who did not adhere to speed limits across all vehicle types.

Explanation:

Step1: Identify the relevant data

We need to find the total number of drivers who did not adhere to speed limits. The data for non - adherence is in the "Did Not Adhere to Speed Limit (No)" row.

Step2: Sum the values

The number of truck drivers who did not adhere is \(20\), the number of SUV drivers who did not adhere is \(40\), and the number of car drivers who did not adhere is \(30\). We use the formula \(N = 20+40 + 30\).

Answer:

\(90\)