Replacement times for CD players are normally distributed with a mean of 8.1 years and a standard deviation of 2.4 years.

Replacement times for CD players are normally distributed with a mean of 8.1 years and a standard deviation of 2.4 years. How many years would you set the warranty for if you only wanted to replace 8% of those manufactured? (Hint: Think about what side of the distribution you are on.)