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

Question 35

Multiple Choice

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.How likely is it that at least three of these systems will require re-installation.?


A) .3230
B) .3732
C) .2554
D) .1989 e .2868

Correct Answer:

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