Question 25 CMAA Incorporated, a manufacturer of riding lawn mowers, knows that their mowers have a normally distributed lifespan, with a mean of 3.1 years, and standard deviation of 0.8 years. They want to set up a warranty so that they will replace the mowers that fail early. Question: How long should the warranty period be (in years) so that they only replace 6% of the lawn mowers that fail within that warranty period? Please show your answer to two decimal places. F # of years = Submit