Company XYZ know that replacement times for the DVD players it produces are normally distributed with a mean of 10.4 years and a standard deviation of 1.4 years. If the company wants to provide a warranty so that only 0.9% of the DVD players will be replaced before the warranty expires, what is the time length of the warranty?

Answer rating: 100% (QA)

Only 09 of the DVD players will be replace... View the full answer