Question

fill in the blank 1 point
a motorcycles fuel efficiency represents the ninth decile of vehicles in its class. make an observation about the motorcycles fuel efficiency. choose the correct answer below.
a. the motorcycles fuel efficiency is greater than the fuel efficiency for 100% vehicles in its class.
b. the motorcycles fuel efficiency is greater than the fuel efficiency for 9% of vehicles in its class.
c. the motorcycles fuel efficiency is greater than the fuel efficiency for 10% of vehicles in its class.
d. the motorcycles fuel efficiency is greater than the fuel efficiency for 90% of vehicles in its class.

Explanation:

The $n$th decile divides a data - set into 10 equal parts. The 9th decile means that 90% of the data values are below it. So, a motorcycle whose fuel - efficiency is at the 9th decile of vehicles in its class has a fuel - efficiency greater than 90% of the vehicles in its class.

Answer:

D. The motorcycle's fuel efficiency is greater than the fuel efficiency for 90% of vehicles in its class.