At One Vehicle Inspection Station, 13 of 52 Trucks and 11

question 21

Multiple Choice

At one vehicle inspection station, 13 of 52 trucks and 11 of 88 cars failed the emissions test.Assuming these vehicles were representative of the cars and trucks in that area, what is theStandard error of the difference in the percentages of all cars and trucks that are not in compliance with air quality regulations?

• A) 0.070
• B) 0.095
• C) 0.025
• D) 0.049
• E) 0.032