Car Sounds sells and installs high-end sound systems for cars.10% of the systems that the company installs need to be re-installed because of faulty first-time installation.You plan to randomly select 20 of Car Sounds' recent installations.In this sample, there's less than a 2% chance that more than what number of the systems will have to be re-installed.
A)5
B)4
C)6
D)3
E)10

Question

Quizplus · Accepted Answer

10% of 20 is 2, so there's less than a 2% chance that more than 2 of the systems will have to be re-installed.

Car Sounds Sells and Installs High-End Sound Systems for Cars