c. A neighboring country uses a simpler test for determining whether the gas-mileage standard is met.

It also has a target of 25 miles per gallon, but its test involves forming the simple average of the 20 randomly observed miles per gallon and then simply testing whether the calculated average is within 219 1 mile per gallon of 25 miles per gallon. That is, the gas-mileage standard will be judged to have been met if .

1 20 20 LXi E [24,261.

1=1