two qeustions that are the same, plzhelp

A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.9 years, and standard deviation of 0.8 years. If you randomly purchase one item, what is the probability it will last longer than 3 years? [:1 A manufacturer knows that their items have a normally distributed lifespan, with a mean of 8.4 years, and standard deviation of 2.4 years. If you randomly purchase one item, what is the probability it will last longer than 10 years? Round answer to three decimal places :1